Only differences in centres is that sals is 12mm ring gear bolts and D60 1/2" I mentioned before. There are 2 different centres for both 4.56:1 and lower ratios and 4.10:1 and higher. CARRIERS are otherwise identical where it counts and run the same bearings.
Crownwheel-side pinion bearings are the same - yoke/flange side are different. To put a D60 pinion in a sals you need to use an HM88644 and HM88610 cone and cup.

