Hi

I'm updating the 8.75 rear of my '70 Challenger and bought a set of new Moser axles Part # A30-CST-E71
I was just wondering why they are informing at their web site that these axles will fit ONLY for 1971-1974 E-body and 1970 is excluded ???
So far I have not found any main differencies between the 1970 and newer E-body axle housings.

I have not yet installed these axles, because I have an other question regarding the axle bearing sets.

Moser is offering two different sets for 8.75 and Dana 60. One is with snap ring Part # 9400M and the other is without the snap ring Part # 9400RP
What is the reason for having available two different types of axle bearings for these Mopar axles?

Which one should I choose for my 70 Challenger, W or W/O the snap ring???

If these have something to do with the bearing set choice, I have stock 11" rear drum brakes and currently having OEM cone type sure grip, but will be updating the SG for Dana Power-Lok style SG from Yukon.