Angus242164;42767 wroteOn early diff's up to roughly 1980 IIRC there is no sticker, instead there is a brass plate riveted to the left strengthening rib on the diff centre housing, the ratio is on the plate.
Agreed, before 79 ish as well. The diff casing casting seems a little bit more old fashion on the early diffs as well compared to 79/80 ish, then of course it changed to a different design from 1981 onwards.
Anthony