[1968 Pontiac]

Got the case; it's a 241C. I couldn't see the tag originally because it was covered in undercoating. The tranny fluid was a nice red colour and the silicone seal where the transfer case bolts to the adapter didn't look too old, so I think this was rebuilt in the recent past. The truck only had about 140k miles on it. I couldn't get the bottom bolts of the adapter loose as they seem to be way into a corner that was too small for my wrench, and I don't have a snap-on 15mm which probably would have had a thinner wall on the box end of the wrench. I also took the shifter and linkage and housing. I removed them first and it actually made the job of unbolting the case easier because I could access the top and top left bolts through the hole in the floor rather than working from underneath around the front drive shaft. I couldn't remove the front drive shaft when removing the case because someone had tightened those four bolts with an impact gun, which is what I used at home to separate the shaft flange from the case. Thanks for all your help.