I am not sure if Andrew is refering to my car, but I also have a 72 degree camshaft by Stewart Wilkins in my car which he drove a few months ago. Does go pretty hard, especially now I have advanced the ignition timing a bit.
Just a word of caution though, since I have put in the new cam I have been having troubles with low manifold vacuum screwing with the brakes. I am trying to sort a vacuum canister atm to try and fix my problem. Will post results when I get it sorted if anyone is interested?