my 340..3 cars, 34 years, 1 family. where to go from here

The cam is profiled after the "HEMI" grind from MoPar Performance.
I used one in a 1972 340, same pistons you have, stock intake, T-quad carb, 4-speed & 4:10 gear.
It was in a '69 Dart, ran 13.60's.
This was the first engine I ever built, circa 1977.

Need to get everything checked for wear & cracks.
If ok, ring & bearing it, degree the cam & Spend some money on the heads.