Since 2003, EFI Connection has built automotive wiring harnesses, connectors and engine-electronics hardware for enthusiasts, with a particular focus on adapting classic GM engines to modern LS-series controls. The company pioneered its crank-and-cam signal solution in 2008, and its EFI 24x and EFI 58x conversion kits now cover more than 50 small-block Chevy, LT1 and big-block configurations. EFI Connection has also been a CNC manufacturer since 2012, producing its offerings in the USA and supporting do-it-yourself builders with the parts and tools needed to complete their wiring projects.
Shiftworks, IncBorn from its founder’s 1966 LS-powered Chevelle transmission swap, Shiftworks, Inc. makes conversion kits, shifters and related components that let classic-car owners upgrade GM automatic transmissions while keeping the factory interior appearance. In business since 1991, the Ontario, New York company also rebuilds original GM floor shifters and adapts them for modern transmissions, including applications reaching eight-speed automatics.ONTARIO, NY
Sikky Manufacturing LLCFounded in 2008, Baltimore-based Sikky Manufacturing makes American-made components and complete systems for LS engine swaps, including its own motor mounts and transmission adapters. The company also builds turnkey vehicle conversions and provides private-label manufacturing, using CNC machining and other fabrication capabilities to develop, test, and produce parts for automotive performance businesses.ROSEDALE, MD
Creative Wiring Solutions, LLCCreative Wiring Solutions, LLC develops and provides vintage motorcycle wiring harnesses, electrical components, parts, and accessories. It offers plug-and-play replacement parts and customized solutions that incorporate newer technology into vintage electrical systems.EATON, OH
Redline MotorsportsNearly 38 years of hands-on experience with GM electronic engine management define Redline Motorsports, a South Florida shop led by president Howard Tanner. The company develops reliable performance builds for late-model GM vehicles, serving enthusiasts who want anything from a street car to a dedicated race machine. Its long involvement with direct-injected GM engines now extends to the mid-engine C8 Corvette.TAKOMA PARK, MD