www.burtonpower.com do similar stuff - if you go on their website go to "Transmission & Clutch" and then "Clutch components - hydraulic" and you can see they have a T5 version. It might be worth giving them a call to see how thick theirs is and whether it would give you the right clearance to the clutch.
I have a feeling there were 2 different bearing retainers - Ford and GM. One has a larger diameter base but I can't remember which! I bought a couple from gearboxman.co.uk and he asked me which T5 is was for because of this. I definitely had to turn mine down but only by a small amount to fit my John Eales bellhousing. Oops I've mentioned that already
If you do fit a concentric slave on a base like that (or use a different retainer) then you may need to adjust the shims on the front bearing. You can get kits from bearingkits.co.uk.
ps. This is my setup:
http://www.v8forum.co.uk/forum/garage.p ... age_id=291
Mike



