I have an observation, I have a t5 from an astro van, it has the dorf bolt pattern. The input shaft is the same as a saginaw 3sp in length, there would be no need to do any cutting/grinding to use it. I believe that is what the jeep input shaft is also. I have the bell housing from the astro van ,it had a 4.3 v6 and would bolt up to a later model 230/250 or a small block. It's on the shelf, one day maybe find a good project to use it in.
Tommy,
Yes, I have an Astro T5 also. It actually came out of a 1989 Safari Cargo van with an inline 4 cylinder. My research tells me that all V8 Camaro and all Astro/Safari van T5 trannys have an input shaft that is the correct length for use in an older truck with a muncie pattern cast iron bell. The folks who choose an Chevy-S10/GMC-S15 or Camaro V6 T5 have to deal with an input shaft that is about 3/4" longer than the V8 Camaro and Astro counterparts. The best solution to the longer input shaft is well discussed elsewhere.
For me, I chose the Camaro T5 because of the 2.95 1st gear. My Safari van T5 has a 4.03 1st gear. Besides, I bought the Camaro T5 very cheap as parts. I am able to replace the broken C-clip and thrust washer. the gears were all good. Simple repair.