R180 rear diff for uk Widetrack sti
 

Needing a r180 rear diff from uk Widetrack sti

you can use any newage R180 3.54 rear diff, just have to swap the pinion over from your old one.

His old Diff is an R160 so can't change the internals from it into an R180 diff

Is this going to be a straight swap, there are differences in the drive flange on the widetrack diffs cant remember exactly which way it is but the PCD is different from the earlier ones, you can redrill the PCD but can't remember if it's the widetrack diff or the non widetrack diff that can be redrilled. The widetrack diffs are also plated all be it with a very low preload.