Originally Posted by It's Czech Mate

Doesnt need headwork for under 200bhp the valves are plenty big enough

A polish helps a little

bodies without cams are a waste of money, the cams are cheaper and can be set up using the existing management, bodies cannot, therefore the cams first is the way to do it (150bhp) then add bodies for over 150bhp, this is where it gets pricey with standalone management required, however ALL n\a cars are 'pricey' to tune and this one gives particularly good results if you're starting from base

also ARP do not make rod bolts for this engine last time I looked

you will also need to think about valve springs if you raise the rev limit much above standard

For the record, Pumaspeed have always been full of shit, Pumabuild are a little better but not massively so.