hey i have been reading up on this myself, and i think that i am gonna go with these heads as well. I have read on numerous sites etc. that you can use you existing valvetrain components such as rockers springs etc. on the p's. I for instance would be able to use the 1.7rr i have, along with the crane springs, and all the other stuff i just put into my e7's
should cut the cost some.
DId you buy a set already, if so what did you pay for them, and i have also read that if you port them they respond very well. However depending on what cam you go with they may not need porting because of how they flow. You don't want too much cam for the heads, b/c from what i've read the air velocity could suffer, or maybe that was not enough cam for the port sizes one way or the other anyhow:thumbs up: