Pleasant to talk to, still waiting to hear back...

The Best, nobody does it better. 1000% Satisfied 🏁🇺🇲

If you want it done right, go to GRC. Umberto knows what works. Had a full engine rebuild and numerous mods done to my Mustang and it performs.There are few shops you can trust and GRC is one of them. He is busy for a reason!

Brought my 2018 F150 here for the first time last week and met Umberto and Neil, They did such a clean job installing my snow performance kit. All the wiring was done nicely and professional. I went to the professionals to have it done the right way and I feel like they went above and beyond to make sure it was. I definitely recommend this shop. I will be back for more work soon Im sure. Thank you all for taking care of my truck.

Best speed shop I’ve ever been to. Their work is flawless, prices are fair and I’ve been coming here for 15 years so I know. This is the place to go if your going to make your car faster, handle better or for a repair. My car started out with 390hp and now it has 700 thanks to the hard working hands at GRC!

Umberto is an honest mechanic. Knows his stuff. Neal is great as well. Good guys. Stand by their work and make sure youre happy. Earned my business most definitely. Look forward to my future build with them.

Bought a hood scoop for a mustang online, but never ship out the item and no answers to my mails . Really bad thing . I can not recommend this shop!Can you give me a email address, so I can send the order to this address?

Brought my truck here for a lift, wheels, tires, exhaust, and cold air intake and they did an amazing job. Definitely recommend this shop

Very good company. I have dealt with owners and they are extremely ethical and competent in everything they do. Top notch facility too. I feel comfortable with any work they do.

Hello Readers!I had a new Ford F150 engine put into my 2002 Ford Truck about 5 months ago. They did an awesome job on the installation, and the total price of everything was very reasonable! Besides, all the work is guaranteed for 12 months, just like the Dealer....just much cheaper! If you need work done on your car or truck, have it done at GRC Performance, they are honest and good working people! They do brakes (I just had mine done last week) and did a great job! I will certainly stay with GRC Performance for all of my further Ford F150 Truck needs!THANKS SO MUCH GUYS!!!

I have finally found a performance shop that actually cares about the quality of their work. Their attention to detail and workmanship is second to none. I had a complete engine rebuild done and I couldnt be happier. Seriously, the attention they put into their work is fantastic and their prices were very reasonable. I have been looking for a good auto repair performance shop for years now and finally I have found a great one. Thanks GRC..

I have been taking my GT500 to this shop for years. Before that a Roush Stage 3. They never disappoint. I wouldnt trust my baby to anyone else.

Ive had nothing but great service here. The installed me race suspension, exhaust, and a shifter. Superb work and affordable. I trust them 100%!!

I own a 72 ElKO fully restored with a LS3 engine. I have gone to several high-end top-of-the-line mechanics to identify a fuel smell after every fill up. I had to drive an excess of 30 miles prior to parking it in the garage. I spent over 9K just determine the problem in which GRC was the last place I ended up going to. The owner Umberto was terrific he said hell fix it and DID! Of course the fix came with a price tag, but I dont need to worry about gas fumes lingering in the garage anymore ... THANKS UR TRULY THE BEST!

Have been coming here for a bit over a year now to get repairs and after market modificationmodifications done to my 1990 mustang from a transmission rebuild to a gear install these guys know what theyre doing and would easily recommend to anyone trying to do the same type of work to their vehicles to come here.

Very nice people and the mechanic knows his stuff i will be a regular customer from now on

Great work, great attitude and just a bunch of friendly people. There is a reason he is so busy, so let him take his time and get it done right the first time..

Best Shop in California, Period! Umberto knows it all. I wish I still lived on the West Coast!

They helped me out of a little bind very nice people!

Micky mouse shop dont bring your preformance cars here he dosent know what hes doing half ass work

They couldnt fix my carburator problem despite that being their expertise. The tried to re-curve my distributor and it advances too far now. They put in a power steering bracket for me, during install the bottomed out a threaded rod into the engine block - cost me $300 and several hours to get fixed. They installed a parking break connection for me, it sat uo against the driveshaft and now that $350 custom driveshaft is ruined. They didnt even offer me any money off of repairs they werent able to make.Incompetent.Cost me a lot of money with their inability to fix anything, and their excellent ability to screw things up.

Very friendly people and fair prices

Like them a lot going back

Was doing work on a car that was in there. Has receive a lot of money for the work but has not completed the work it has been 4 years and still trying to get it done..