727 C body-A body?

Did Mopar build 727's in different configurations? I know there was a small block and big block 727, but if I pulled a 727 out of a C Body is there any question as to if it will fit under my 68 Dart? swapping /6-904 with a 383 and the 727. motor and trans are a pair. Not concerned about motor, and know driveshaft needs shortened, but is this tranny gonna be ok under there. Thanks.