I have this adapter here and thought I would share some pictures of it. Was on a chevy engine (pattern: small block, big block, 6.2, 6.5) and gives you SAE #3 on your engine. Had allison auto behind it.
Also I am looking for a bell housing to go from SAE 3 (on Detroit) to NV4500 Trans.
Also does anyone know how much longer the dodge NV input shaft is compared to the GM?