I vouch for Bryan and Peter at link. We're great with su,s too.
Their road testing is good. They don't thrash the car either its a gradual smooth passage through the rev range.
Not sure if bryan still around last time I called couple years ago Peter was there though.

Hans at hp products next door is great at making stuff too. If my mini wasn't written off I'm sure I wouldn't be here and I'm sure I'd have a 1100cc supercharged beast.