Will a '73 Continental Mark IV tranny fit into a '74 Swinger with a 318?

Torqueflites are not unique to Mopars, they were used in IHC vehicles and some of the postal stuff and I'm not sure what else. So there are many bell housing patterns, and of course Mopar ones amount to at least 3--slant six, SB, and B/RB/ 426 hemi.

Ford may have also been used in some industrial stuff, don't know, but I can guarantee you that unless done with some adaptation --and it could be done--it will fit no Mopar engine. Whether it will clear the floor, tho, is doubtful