Ok--my 82 K20 has a TH400/NP208 setup.. I have a TH400 out in my shed,salvaged from a 1974 Monte Carlo that had a 454..it has the "short" tail on it,only about 4" long (approximately,eyeballing it)..it appears to me ,looking at the spare T/case and TH400 adapter I have in the shop,its possible it might be able to just yank the tail off the car tranny and use it on the NP208..looks like its "deep" enough to allow the shaft to slide in enough to bolt up..(or maybe I could use a spacer to take up the extra length,if its too long??--I realize the T-case would need to be shoved back to compensate,and possibly alter the driveshafts)..just wondering if anyone has done this.... Anyone know if its possible this would work?? --or should I put it up for sale on E-bay or something,since I need cash!..I'd hate to sell it if it would fit my truck as a spare,but I'd also hate to keep it and find out it wont work.. ..time to do some cleaning out around here..the 500 Caddy motor and its TH400 might be next ... ..