Mopar 318 heads

With 3.73 gears, a reasonable stall converter with stock heads on a low compression 318, you can use a street cam with as high as a duration @.050 of 228 and make very good power. Now I can’t finger the number and even more so with the missing variables. But this would be a pretty good street combo that would approach your goal.

PRH is a head ported in your geographic area in which I would (or if he would be OK with doing your heads) send the heads to for some work IF the price of the work is within your wallet.

The catch of reworking and some porting of an old iron head is very close to an aluminum head. The price difference normally warrants taking a pause since the price difference is small but the heads abilities are much greater making it well worth the price for many.

I am not against iron heads.