My Dart that I converted to a big block/727 was originally a slant 6 with a 904. Can I use the transmission crossmember and biscuit type mount from the 904 on the 727? I would get a new biscuit if I can. Also, I was wondering if I should switch to the later spool mount type crossmember. Is there any advantage to using a spool type mount or will I be O.K. with the biscuit mount crossmember I have?