Sounds like your doing what I'm in the middle of.

Karl is doing my engine for me, (Stg 4 "420bhp"). I was going to do it all on a standard comp bottom end, but for the sake of spend abit more, i've decided to go semi low comp in an effort to keep it reliable and as a better stg 4 conversion.

Basically Fully Modified Head by Karl including different valve springs, + his own cams, T38 (Universal Turbo's Version), Greys, EEC IV Inlet Manifold and flowed inlet tracts, Obviously Fully rebuilt Bottom End.

You could probably do it all using a very good standard comp bottom end, which I intially wanted to try, but after spending so much on the head, turbo, inlets etc, I decided to go the whole hog and have the bottom end done as well.

I would say I'll let you know how it goes, but I have to go over to the USA for about three - four months as I work over there, but I'll let everyone know when it's finished.

There are two versions of the T38 going about at the moment, One is i believe Turbo Technics which is a full one off. (And appears to have surge problem if used on anything but a fully flowed head) and the other is Universal Turbo's version, which for me, is the better of the two for what I want.......... High Torqe, Low lag.

But it depends what your after as to which is more suitable.