I recently more or less destroyed everything from the transmission back on my '84 Chevy C10 PU. I was able to find parts to replace the driveshaft, yokes and rearend. However, I am having a little trouble with the transmission. I found a transmission but it is slightly different from mine and I need help. The transmission I destroyed was a THM700-R4. The one I found is, I think, a THM350. I need to know how I can make sure of the model and what, if any, modifications need to be made to switch these transmissions. Please help!