Good afternoon,

I am in need of a 10-bolt 8.5" GN rear for my '87 Buick 455 Regal. I need gears in the ratio of 3.42:1 - 3.73:1. If the rear is from a non-posi '86-'87 Olds442 (with factory 3.73:1), I am still interested, as I will purchase a posi unit for it.

Thanks much.