What years had this combo and which trucks are the best ones to look for. I about pissed myself yesterday when I was at the junk yard pulling a set of Warn hubs off a 74 K-20 when I looked under it to see if It had My dream tranny. Sure enough it was an SM465/NP203. Now all I need is a TH400 version 205. I know I can convert any 205 with the kit from ORD but I want to save some money.