Originally Posted by mrviper
i would slap in a alloy decomp plate from ferriday engeneering and keep it a propper st170 engine down to the fact that the head flows like a cossie head
Utter bollocks i'm afraid.
A stock zetec E (non st170) head flows much better than a stock cossie head. If you then look at the st170 it is streets ahead and out performs the YB head by miles.