Where is the best place to buy a rebuilt transfer case and how much should I plan on spending? It's for a 91 K5, 241C with a passenger side drop. The intermediate housing casing is broken and after doing nationwide GM parts searches, talking to the folks at New Process, and searching numerous junk yards, I have found that the particular casting number I need is obsolete and was only used on a handful of trucks in 91. It mates up to the oil pump gear in a way that none of the other close casting numbers do. I have been told by numerous drivetrain shops including GM dealerships and New Process/New Venture/Magna (or whoever they are now), that I'll have to swap in another case. So what does everyone recommend? This is not an offroader, spends most of its life on the road.