My transmission in my 1981 GMC c1500 recently went out. It was a TH350C(MV4). I have a good used TH700R(MD8) out of a 1989 truck. I was wondering what would be involved in swapping in this tranny? The TH700 doesn't have a tail housing so I would have to get one, I am not sure if I would have to change the driveshaft or not and what else I would need to modify? Has anyone attempted this conversion?