This motor was built built by Terry Vance (Vance Hines Racing) when he worked for Russ Collins in the 80s. The motor was built for Charlie Curnutt's first long travel Class 1 off road race car. The car lapped the field in the second lap. On dry pavment the car would do 3rd gear wheelies. This motor was designed and built for endurance desert racing. Vance Hines is still around an able to service this motor. Whatever your project this will super charge it.