My 1/2 ton 53 Chevy had a 4 speed transmission in it. The u-joint (4) bolts worked out on it. 1/4" bolts if I remember right. At that time there was no internet for help, no 4spd u joints to be found. So what I did was get one from a 3/4 ton truck that had a ball. Took it and the rear part of the 1/2 ton u-joint to a local machine shop. They turned out the original splined part on the rear of the 3/4 ton joint and welded and machined the splined portion from my 1/2 ton 4 spd joint. Works great, only thing is you need to pull the rear end back to separate the assembly now......
John
