Okay so I Got the conversion joint that was listed in the part numbers thread here. I think it was a Napa part 430 or something like that. Well I got it from Advance and they had to cross reference the Napa number. Anyway what they gave me is a bastard joint but it is the wrong size and uses external clips where I need internal clips. I am operating under the assumption that they correctly cross-referenced the NAPA part number. Does anyone have the correct conversion joint number for a 90 Blazer with a 700R4 and 241 T-case that will mate that drive shaft to a 14 bolt? I would be very grateful.