Can any of you date code/part number gurus help me out with my search for a "correct" 727 for my `70 road runner?The specifics-RM21NOG177309 383/727 8 3/4 St.Louis biult, buid date from the fender tag-C18 152369,no biuld sheet.I have read a couple articles but am still somewhat confused as to which trans I need.I have the matching numbers block and would like to find a 727 case that is at least correct as far as biuld date and casting number.
