Excellent news, we have one brand new 6 speed gearbox sat waiting with old diff removed, and correct bearing pullers have been bought to remove the bearings from standard diff. And has made a drift to fit the bearings again.
If anyone has any difficulty in fitting the diff i.e removing/fitting bearings, I know someone who will be free over next few months on a work sabatical who will for a small fee fit them to your car providing your current diff has correct ring gear. Baed in Towcester, near Silverstone easy access from A43, A5, M1 etc
Aaron.