NEEDED: Good slant 6 904 transmission or running parts car near South GA

Thanks for all your help! I scored a 67 Dart 4 door parts car for $350 with a REBUILT TRANSMISSION. Now I have to swap it out. I think I am going to need a newer flexplate (68 up slant six). Judging from the noise my 72 is making, the one in it is probably trashed and I THINK the 67 flexplate has a smaller register hole.