rear end relocation

Man good post, sorry I do not know? Have you asked at the bigblockdart site? I would think this has been done. Most guys want a shorter base for weight transfer etc. But I know exactly what you are talking about, 245s should fit fine if you can get it back about an inch.

I think what you are saying is correct, but I have not done this mod on my 64 Dart. Will stay posted to see what you come out with.