I've got a 450 series COE that was originally a road tractor. (Came from Spanky) It has hydro-vac brakes but as far as I know the frame is orginal to the back axle. If I can help with any measurments etc. let me know. I'm interested to see how this project progresses.
Scott


1947, 1950, & 1952 Chevrolet 1/2 ton
1952 GMC 450 series Cab Over Engine
1946 Chevrolet 2 Ton