American Powertrain ProFit Transmission Kits Deliver Perfect-Fit Modern Manual Transmission Swaps

American Powertrain ProFit Transmission Kits are engineered to simplify modern manual transmission conversions with vehicle-specific solutions designed for classic muscle cars, trucks, and hot rods. Built around popular TREMEC transmissions like the TKX and Magnum, ProFit Kits include the essential components needed for a clean, professional installation, including crossmembers, shifters, bellhousings, hydraulics, pedals, and mounting hardware. Designed for precise fitment and easier installation, these kits help eliminate guesswork while improving drivability, shifting performance, and cruising comfort. American Powertrain’s Made-in-USA craftsmanship, premium materials, and swap expertise make ProFit Kits a trusted choice for enthusiasts seeking reliable overdrive performance, smoother highway driving, and modern shifting feel in vintage vehicles.