Cant belive I missed this post
The ST engine is a really good staring block for a FI system, I'm over the moon with my conversion and friends of mine that have gone the supercharger route have had brilliant results also.
The standard ST head doesnt really need anything doing to it unless going for very high outputs (450+), have spoken to some people in the know who say the heads good for 700bhp! The basic design of the head is much better, giving better flow, the cams are far better (although easily swapped for even higher spec items) and the valves are 1mm bigger.
First and foremost get rid of the inlet manifold, even if going for a low boost conversion. Its caused me no end of trouble, get shot of it.
Hi simon ive just tryed to pm you about something im trying to do just wanted to see if you could help me if you want to pm me your number i can ring you it easyer than typeing...lol
The standard internals seem to be good for around 300bhp, if your going for more, then uprated jobs will be the way to go.
If your going to use the ST running gear as well, then the fly wheel needs to be changed as the dual mass set up tends to die pretty quickly. My standard clutch held out for about 3 months on 300bhp before going the same way, although it had a hard life already.
If theres anything you want to know, I'll do my best to help out mate