302 casting potential?

you ever port a set of 302s? theres alot of meat in there. matter-o-fact i broke through the p-rod guides before ever coming
close to the water jackets. brass sleeves and fixed. IMO the swirl chamber is the power maker.

ive never ported anything man lol so im new to all this...i would really like to port a set of heads though as i think it will help understand all this stuff alot better...of course, i need some knowledge before i even pick up a grinder or set of heads