For a year now I Too have owned a 1966 c_60. 2speed axle. As for the engine there was a 350 chevy I pulled out not sure what was in it before the truck is a wrecker/hauler it will carry a car above the cab one on the back truck bed is powered by two large hydro cylinders you can also insert the stinger and tow a car aswell truck has big winch driven by pto off the motor/trans. Any help would be great I have never found another one like it online! [email protected]