I have fitted one, it seems to have the 4bolt mount for the mk3.

You need to be careful about release bearings, there is a thread about it somewhere. Other than that it bolts straight in.

I split mine in half and fitted my lsd (standard rst) went right in with some new bearings. I think i gave a best offer of £100 and it turned up in 2 days.

It doesn't come with a clutch arm, your standard rst one fits but you need the late type clutch arm bush (the grey one) ebay sell them so do burtons i think. Your rst speedo goes right in, you need to get a red speedo drive (ebay).

Gear change is very nice, and a few people have them with over 300brake and seem no to have broken them. Bigger bearings and a stiffer case seem to really help.

Good luck and let me know how you get on

Rob,