well the only person id reccommend (and you may have seen him in peformance ford) is dean from shephard motors in chelmsford essex tel no (01245-477999)
he built me a low comp bottom end for around 800 quid bearing in mind that was a few years ago but i dont think the price is that much different now,i had that ,a cossie 2wd turbo 48 housing,bayjoo chip, ap paddle clutch,-31, and the head was left standard ,and that was running around 220-225 holding 20 psi and believe me it was so quick i only gave it some just to listen to the jet engine sound that came from the exhaust,give him a bell in my opinon hes the daddy,sometimes he does get busy so if so just call him back! just say you spoke to martin from colchester who had a white s2