If a sierra comes with a 7.5" diff does it have shorter shafts or is the 7.5" the same width as a 7" and the shafts the same width.

I know there are differant spline dia's and diffferant lobro sizes for bolt on's I am just wondering if there is more than one length for sierra shafts.

Thanks all

As far as I am aware the only Sierra with a 7 1/2" diff is a cosworth, the 7 1/2 refers to the crown wheel and the casing is wider ... But the shaft lengths I think are the same. The cosworth lobro flanges are mostly 108mm

They where also fitted to the last of the sierras with 2 L dohc/ mt75.