The motor was rebuilt in 1997 and it was made into a 235. The drive shaft is like your 53, so I'm gonna have to take some measurements and see what I need to do to make it work. I bought a rear end out of a 63 3/4 ton,I think it has 4.11 gears. I'm gonna swap those out and then go for the T5. I just need to find out what its gonna take with my style of drive shaft. If any one has made this swap please let me know. I'm very interested. Thanks again all!