Hi Bazmzn
Im running an rb20 with a 30mm phbh, jl3, and four plate std.clutch extra stong springs.
Ive done 800 miles so far and the clutch is holding up, but recently found it slipping a little, under pressure

so i will change to a five plate in the future.
The phbh was used because that was what i had at the time, however i now have a tmx35 but i havent got the correct jets yet so havent fitted it.

The kit comes with the same manifold as the rb22 and rb25 so they are to suit the larger carb, if you want to fit a 30mm you will need a stepped rubber (you can buy a vw rubber off epay which fits, 2 for about £4

).
Ive managed 78mph (gps) so far
Regards
Russell
When i was young my Mom said "if you haven't got anything nice to say, say nothing at all " ..................... and people wonder why I'm quiet around them !