Hi guys. I have a '68 that currently has a th350 in it and I have a 200-4R out of an '80's Monte Carlo SS that I'm going to put in it. I've read that the drivehaft sould be fine. The mount looks to be a little farther back on the 200 so I'm thinking that a TH-400 crossmember may work. I'm hping someone here has done the same swap and can give me some tips. I would like to make sure that I have all the neccessary parts so that I don't have the car down for too long.Thanks!