Been meaning to get back to you ohsuby, have counted 39 teeth on crown, divide by 9 or 11 does not come up with a nice ratio, but by 10 yep, nice 3.9:1
As it is a customers car need a warranty sort of thing unless price is right. May be putting supply another box on the owner to save warranty shtuff - they can source and get warranty themselves.
speedisleeves may be what you suggest wrxer, by rawhide co., closer inspection shows even the shaft the clutch bearing slides on is way shagged, dissembly and fix up of a recent rebuild box upsets customer already. I was thinking my spare EA82 4WD box casings would solve part of the wear problem and make it possible to fit behind my EA82T

dreaming here