71 Dart Slant Six w 904 into 64 Valiant

Adapter bushing is for 1968 and newer small block engine to 1967 and older 904 trans. The later flexplate is used. The early torque converter is used.
Ok so it sounds like the engine w/o the trans makes the most sense. Yes I have PB with cables and wish to keep the original setup. Add bushing and later model flexplate. If the deal goes through, I'll reach out to you CharlieS for the bushing, then search for a flexplate.

Is the oil pan and pickup tube a fitment thing Bscchief?