Originally Posted by fudgeass
buy an adaptor plate, far easier than fucking about drilling/tapping it.
plush if something happens and you bend the valves etc yo dont have to do it all again
Wimp!!
It is a 20 min job but not something you should atempt with your black and decker cordless. At the least, take the time to set the face up square under a pillar drill.
You will break through into a oil way so need to flush out the head afterwards. Then use new head studs and arraldite them in to seal.