I have the opportunity to purchase a 4bt bread van with a TH400. I have not chosen a pickup to swap it into yet. I would prefer 4WD but would settle for 2WD if the swap was less of a headache. I have found 2 candidates: 1) 91 K1500 5 speed manual and 2) 80 K10 TH350. Now assuming I have the complete 4BT/TH400, what other parts are needed bolt it up to a GM 5 speed?.....just a fly wheel? And with the TH350, I assume that the TH400 torque converter will bolt up to a TH350, any other modifications necessary? Will the P30 Frame Mounts bolt up to either the 73-87 or 88-98 style or will they need to be modified? What about the oilpan...any need to modify it to clear the crossmember? Any thing else to consider?