R380 Gearbox

Took out both transfer box and Main box on driveway due to on going nasty bearing sound noise (had transfer box checked out a few months ago by bristol transmissions and they said it was all ok) so now going to get the main box checked out, mean while thought i would put in a new clutch complete, the spigot bush was very badly worn so went to local landrover dealer to get new bush but its the wrong one and only one they said they do, it would go in the flywheel nice but the input shaft on the gearbox is far too sloppy by about 3 or 4 mill, this is on an old E reg 90 but with a 200tdi engine and a R380 box no 68A---------L someone said it could be from a V8 hence the different size input shaft from other R380 boxes so does anyone out there know if I can get this odd size spigot bush anywhere?