Advise wanted on reviving a 318

I’m finally getting around to overhauling the motor in my 66 B’cuda and I’m looking for suggestions on which heads to use, cam & pistons/compression ratio.

A little background, this is a 1969 - 318 that I originally rebuilt in build in 1983 when I was in college. The 318 motor was a dealer replacement engine put in the car when my uncle burned up the original 273 motor some time in 1970. Since 1986 the car/motor have been off the road and garage kept due to an accident, resulting in very low mileage since the initial rebuild. At the time of the rebuild it was bored 10 over and 10.5 to 1 compression pistons were installed.

Additionally at that time, I shelved the 318 heads and installed a set of 1972 - 340 heads that were rebuilt to factory spec. For the cam, I was running one of the Direct Connection hydro “Purple Shaft” street cams from back in the day (I have no idea what one).On top was a LD-340 with a 650 cfm carb.

In retrospect, I was disappointed at the time with the performance. I think my problem was mainly that at the time I did not take into consideration the 340’s larger combustion chamber size when I chose the piston compression ratio.(Like I said collage rebuild!)

Fast forward to today, after the engines’ upcoming rebirth, I’m looking for a street able cruiser, not a monster drag car, enough horses for spirited driving.

What recommendations do you guys have on how I should proceed? I plan (at this point) on keeping the 904 auto trans and the 7 ¼ rear.

I still have the original 318 heads that can with the motor so they are still an option (at the time they were pulled they had about 70000 miles on them so most likely need a rebuild)

Anyone have some ideas on a best way forward?