90% of high power KAs (400-500+hp) don't have P&P, they flow well as they are. What are you're plans that require P&P?

My head will be assembled by Engine Lab w/ a 3angle valve job. no P&P. They even recommended against it as if they knew about the KA

There's a place in Drew Park that did a buddy's KA head for $250 total, cheaper, no P&P. National Cylinder something or rather...

Jesse