what performance would i have with a 1.4 top head polished and skimmed and a 1.6 injection system and 4branch manifold on a 1.3 bottom end ?? its 55bhp standard any ideas what it be after this??

get a cam inlet manifold and throttle body frm a mk3 gt i heard u can get like 85 bhp frm doin this I'm planning on doin it

steer clear of the 1.4 head, it has small ports. Use a 1.6 head