Get the speed master heads either assembled or bare (as a pair of cylinder heads) on Black Friday discount.
Take them to a REPUTABLE machine shop and have the shop install valves, springs and shims to match your cams, rocker shafts (you can search and buy rockers & give them to the machine shop) tell the machine shop to check the valve guides for tightness or looseness.
I built up J heads for $500 doing the same thing and you COULD mill them to a decent chamber size (& mill the intake manifold side correspondingly) maybe port then yourself to 220cfm,
or for a total of $1000-1100 have 239cfm (intake) flowing closed chamber heads that can later be ported during your next engine rebuild.
the assembled magnum heads are another option that might have 191cfm (intake)-the engine quest copies run as little as $900 a pair and rebuilt magnums should be much less.
this BULLSHIT about “Trick Flow, Edelbrock Victor or a ported version of an Edelbrock.” isn’t for the typical 318 engine builder; those heads go on rocket 340/360’s but more often on 406”++cubic inch stroker engines. The port volume of the victor or trick flow would make your low rpm performance lazy and not match the camshaft you mentioned as well. They are for HIGH rpms on a 318
