Yeah the leanburn head, i have one of them of a fiesta 1.6 cvh of a f reg sport, but the pistons are different the rs has flatop pistons and the leanburn (heartshape) engine had sloping pistons will the leanburn head work well with the flat pistons etc, also will the insert bit not raise the comp too much

i heard that the leanburn heads suffers from valve shrouding aswell and generally gives less horsepower, i heard that the xr2i heads are supposed to be the best since they have thick walls so are good for porting

but then im not sure on these just what i've read of the internet etc.

Cheers Ginge i will consider it, you guys got any more info

Cheers Seb