Right guys. Im going to convert the S2 to 2.1 ZVH along with EFi - im going to go Gotech Engine Managment (already spoke to JamSport about this)

I've got a new Stage3 Hybrid T3, Newman 272 Cam, Vernier Pulley, GRS Cooler, Recored Rad, Twin Fans, FRST EFi Head and Inlet (inc throttle body, injectors etc)

Now my plan is to get the head sent away and spec'd up to Stage 3

What i want to know really, what zetec engine to use. And what to get for sensor pickups for EFi? I havnt decided what pistons and rods im going to use yet either

or...

If there's no real gain's with ZVH, still using EFi, on the CVH, what rods and pistons would you recomend?

Also.... What gearbox and clutch would you guys recomend me using?

I'll be using the car for Track/Tarmac stages

Thanks in advance
Daniel