Black Friday - Holiday Sale Now Through December 25th, 2022!
Receive 5% off on all Kits! - Applied at CheckoutOrder your Kit Today!
Order Today! - *Due to demand & material supply, Lead-times may vary.*
Proudly Designed and Produced in the U.S.A.! Business Hours are: M-Th 8:00-4:00pm CST & F 8:00-Noon CST
Introducing PORTER MUFFLER'S to our Family of Brands!
Shop Porter Mufflers to own that Steel-Pac Sound that has been Made in the U.S.A. Since 1931!Shop Porter Muffler's!
We are here for any Questions and Technical Support on your Project!
Please give us a call at: (763) 767-4480 -or- (608) 299-7427 or via email to: email@example.comShop Kits
WILCAP Transmission Adapters
Speed Gems is The New Home of WILCAP - Early Hemi Adapters!Shop Wilcap - Please Call for Order Details and Lead-times!
Reverse Engineering Capabilities and Design Available for your Project! - 3D Scanning and Printing for Custom Parts!
Please give us a Call to discuss your Project! - *All Products are Intellectual Property of Speed Gems*
Check out the cars we have worked on in the past using Speed Gems transmission adapters