302 heads

looking for heads for my 340.I just read a mopar performance page that said on a mild to moderate build that the 302 casting heads would outperform the large valve j or x heads.I wounderd what you guys thoughts were on this.I,ve been consintrating on 2.02 vaulves j or x heads that are way more exspensive.i,m basicly building a stock 340,just a fun driver.trying to keep cr down to about the 9.00 to 9.50 range.will the 302 heads work ok?i haven't found cc's on the 302,s.whats your thoughts:poke:thanks.