Ok i had my head PnP and a new valvetrain put in. would they have to open up the valve ports to put in oversized valves? the reason i'm askin is, i have REV valves and i bent 4 of them, but when i called up REV they only carry oversized vavles for the h23. so i'm guessing i have oversized valves in my head already. if i were to purchase oversized valves what would happen if my vavle ports weren't opened up more to accomidate oversized valves?

Also does anybody know a shop that has any h23 valves "in stock". I called up about every shop i know and even called up REV, supertech, jg, crower and they dont have any instock.

 

i have a set of ferrea vavles for a h22 head im not sure if they will fit a h23 head though, brand new in the box, lemme know if your interested