u can do a budget Zetec turbo for that sort of money...easily achieve 230-250hp no probs on standard head, cams, T3 turbo, calibra turbo pistons, standard rods, OFAB mangement, remap, decent intercooler
i cant see the above costing more than say £2k-£2.5k IMO
oh and if u go for one...let me know if u can find an oil pump for the thing LOL
bassboy