Really? Hope it doesnt come to that. I'm sure there must be somewhere as there are a few tasty E36 M3's that regularly compete in the hillclimbs and sprints...
Why not contact the Jersey Light Car Club on 01534 852952 and ask them who they have on their membership list as a BMW car hillclimber or sprint specialist.
Andrew Ruellen on Albert street St Helier is the BMW and Mercedes specialist,expect to wait at least a month to get a booking slot,hes a very busy man,I also know the bmw master tech that works at Jacksons,who does work on the side too