A recent LRW had a couple of articles on Alldrives 86" with 200tdi conversion. The articles imply that if you use a series 2 gearbox the 200tdi just bolts on., and it seemed to line up with the mounts ok too. Probaly worth getting a back copy of the second article for the photos, maybe a certain editor will comment on which issues they were (my copies aren't to hand)