the ticky heads for vavles which are 3mm bigger then stocky heads am i right

intake valve is the same size as all the other heads. exhaust valve is 2mm bigger, AU heads all the the larger exhaust valve but use a smaller valve stem.

last i looked you couldn't buy the larger stem on any more. so if one is buggerd you need a full set of AU valves, guides, and vavle locks

well there ya go thanks for the info mate