Did you have yours rebuilt?

I have a NWC S10 T5 behind my 216 in my 50 3100. I had it rebuilt and had a Jeep 10 spline input shaft installed by the rebuilder. Took just a little (less than 1/2") off the tip of the input shaft (based on a measurement taken off the stock 3 speed) and bolted it directly to the bell housing. I am using a stock 50 clutch. I did not put a mount on the back of the trans.

Sorry I don't have any actual useful information, only what my setup is, which works pretty well.