[Aubrey N Bruneau]

Yes, I could run a 12 bolt. The 65-up unit is a couple inches wider, so it would have to be shortened some.
I really never thought this thing would make this much power, or hook the way it did. I went through considerable effort and expense, to retain the original rear ( been doing and marketing this package for almost 20 years... never broke one ). Being a coil spring car, with very unique brackets, it concerns me that the geometry for the mounting hardware on the housing, would be virtually impossible to locate as accurately as that on the original housing.

A transmission with a "reduction" top gear, could help me get into a 4.56 rear gear, which is far more available, and a bit stronger. However, to my knowledge, there never has been a "pro gear" ( 9310 ) material for these rear ends.
Which is why I contacted Richmond today !
I'll be &$#ed.... they'll do me some 5.13's in a 9310 material !
one catch
I have to buy 25 sets !
I'd buy 5 sets maybe