evening all,

Im planning for the worst with my williams as i think my rattle at 3000rpm is most probably piston slap(havent verfiied this yet mind) ive also now got zero oil pressure on tick over so things arent looking so good for the old girl...

Anyway if im right a new bottom end will be required and i can remember reading somewere the megane bottom end mated to a willys head is the ultimate F7R engine. Can someone confirm that is correct and sum up what is involved in a nut shell in getting the job done?
lso
Thanks in advance..