i used to have a imp blue phase 2 zetec s was a really nice engine 4 a standard car never ever let me down.
fuel lines...cant you jus put some z-s ones in? or new ones?

on the phase 2 you have pre & post lambda sensors. alot of people decat theyre zs and find the engine management light comes on the dash........so to combat this you can like trick the ecu by wiring the 2 sensors together. im not sure how to do this but it is common practise for the likes of pumaspeed or pumabuild who decat customers cars..maybe give them a call theyre really sound to be fair and will only be happy to help.

best ov luck matey