Another 302 Head Question

You gotta look at the whole combo.
What size tires are you running? My guess is 28s, and so those 3.54s and probably an 1800TC are gonna lock your engine into a low-rpm mode. Heck 4000 rpm in first is gonna be 37mph, and when you shift, the Rs drop to 2360.Then second will pull to 4000=62mph
Personally I wouldn't spend a minute on home-porting.
Before you bolt those 302s on, do some measuring and math. Those 69 engines where the highest ever compression LA318s at a rating of 9.5. that makes the total chamber volume to be 76.7cc. If nm9 is right and we assume a 5.5cc loss with 302s that makes your new chambers 71.2. But your new headgaskets might be 8.6 versus ~4.2 on the original .020steelies, for a final number of 75.6, and so a new Scr of 9.6...... hey it works out good to go no wins no losses right? Not so fast; the engine went from having zero quench to .039 plus the piston in the hole measurement of perhaps .012= .051, meh that might work as well.
Good deal slap the 302s on and ...................
wait,what
No compression gain; not a meaningful improvement on the Q without a compression gain;otherwise same heads soooooooooooo did I miss something here?
Oh I know; you can mill the 302s a lil less to boost the compression the same amount........... but you don't want to mill.
I got an idea, How about just retorque the heads and put some sealer in the coolant, and continue to abuse the old girl, cheap as chicken broth.
I see you spending a week and finding immeasurable improvement, and kicking yourself for having gone thru the motions.
You want more fun? increase the rear gear 5% or drop the tire size 5% or ...... hyup BOTH!!!