I have a 742 323 posi setup out of a 66 Charger. My 65 (Bell II)) axles ...., 741 housing 294 open diff. #1.... Are the splines the same? #2 lengths the same? or should I be looking to re use,, if I can find the axles out of the 66 setup. I have forgotten some of these details over the past couple of decades. Thanks in advance for the shaft input. (no pun intended)