jim_howard_pdx have you had personal experience with the P heads? Obviously, you must have extensive experience to make such a statement
My car will soon have the P heads, and I WILL make you change your mind about them when you see my numbers afterwards.
If you're still not satisfied when that happens, then just look at Jeff Chambers' very low 11second NA stang using GT40P heads.
Are there better heads out there? Yes, ofcourse. But don't go bashing something you know nothing about.