Kustom Products is THE go to specialist when it comes to Transmission Conversion Harnesses.  Our Transmission Swap Harnesses include an Allison Conversion Harness and a Fuller Conversion Harness.  We can Swap Transmissions from a Manual Transmission to an Automatic Transmission or visa versa.  These Automatic Manual Transmission Swaps are made simple with our complete Transmission Wiring Harnesses. If you are considering a Transmission Upgrade or Transmission Conversion, take a look at the Kustom Products Custom Conversion Harnesses.