I tried searching with no luck.. I have a 90 Suburban 4x4, and the carrier broke (where bearing presses on) that led to broken teeth on the ring gear, and some housing damage.. I am looking at buying a 28 spline complete rear end (used) and was wondering if I can use my posi guts to change the 28 spline to a 30 spline, so I can save re-drilling the axles for my 6 lug wheels.. Thanks for any info! ps anyone near Iowa have a 3.73 geared 10bolt rear for sale cheap with 6 lug axles?