Budget 383 build - opinions needed

Depends on the condition of the cylinders. Is there much lip at the top of the cylinders that would indicate a lot of cylinder wear? Years ago we use to rebuild and engines by re ringing them and new bearings all the time. When I was young we didn't have the money to bore, new pistons, etc. If you could find some 1967 915 heads this would increase compression which in turn means more power.