yeah TRX wheels fit great with this diff, but the other wheels only just fit in the guards so i can just run spacers on the rear whenever i run the TRX rims
oh and measured the diff, 1330ish mm with the discs on so the 1317mm must have been without discs
the drilled r31 rotors (ones in the pic)? they were on the diff when i got them and i drilled them myself (have a nice pattern for doing it) they are just siting around doing nothing at the moment