I'm not too concerned with driveshaft length right now. That can be taken care of easily when I have one cut to size. This Chevy eng and tranny are in a 52 Ford pick-up, so there's going to be some fabrications.

Again, my concern is with the tranny output shaft length. There will be no carrier in the middle. The slider will be at the end of the tranny.

Is 4" enough for a slider?

Should I bolt the u-joint to the output shaft and make the springs do all the work?

Should I swap it for a shorter TH350 with a longer output shaft?
(The tranny support bracket location is not problem)