GR Automotive & Customs

GR Performance & Customs

500 N. Mannheim Road

Unit#300 Hillside,IL

708-318-1022

This shop is incredible for any grand prix repair work,in-house tuning, engine building,custom fabrications, powder coating,you name it, they do it all. You can see the difference in attention to detail and quality these guys have. They are sponsored by a lot of racing teams in the northwest chicago suburbs.They are currently working on tweaking my tune and I will post the dyno results when all is said & done.......Check them out.