E=MC^2

So the 200r4 uses the same drive shaft length and I can use the same yokes? The next step is choosing a torque converter... I understand how they work but which should I get? Does it matter if its a stall or not? What stall range should I get??

I was looking on my local Craigslist, I could get a 700r4 out of a 92 camaro with the TV cable for 250. I dont know enough about these trannys, you think the 2004r is better for my application? Will it be easier to swap?

I have a 72 MC with a 350 that was rebulit bored .30 over and has a mild cam. I do not know what the heads are. It has a th350 with a shift kit and a floor shifter. I want to put a better transmission in. Maybe a 700r4? I dont plan on making 500+ HP or anything. I will be doing the occasional burnout street drag racing and taking it to the drive in. What I got out of all the information ive read about the transmissions that I can swap in is that the th350 is solid and can handle some power but it is just a 3spd and screams down the freeway. The th400 requires more power to turn its internals and I will not be going for big HP so its between the th350/700r4. I know with the 700r4 Ill need to run a tv cable and I will need to shorten the driveshaft and move the crossmember back and drill new holes. None of that should to be an issue. Now I know enough about trannys, I can swap them but I will not be rebuilding one myself. If there are any transmission Guru's out there let me know what you think I should do. Rebuild the Th350 or swap a 700r4. I would really love a 4spd manual but that conversion is a bit too expensive.