302 Swirl port heads vs 340 X heads

they are 69-70 heads disassembled. the 318 is basically stock with roller cam. HE doesn't know what he wants for the heads. wants me to make an offer.

you have to buy the heads..plus they are bare which will require springs...valves and probably guides..

I would buy a set of Engine Quest heads..EQ...small chamber like a 302 head...bigger ports like the X heads..better combustion chambers then X heads....flow alot better then a X head...

and probably cheaper went all said and done...you can get them with the LA intake bolt pattern...and just go to junk yard and get rockers off any magnum engines...