While I agree porting the heads would def be worth power on that combo........Spending $1600 to port some RPM heads wouldn’t be a viable option for me.

If you already own the heads, you could sell them for as little as $600, add that to the $1600 the porting would cost...... and buy TF240’s...... and be money ahead.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads