Welcome to the site. Motor of that age can meet the dd reliability metric. Won't get great mpg, but with right periodic maint it will be fine. Compression check and oil checks as suggested. My 66 w/250 considered. Many others can 2nd. Wheels tires and brakes are needed. Look for Grigg to suggest wheel compatibility. Check into the drive line forum for rear differential and or axle recommendations.
There are others in the ga area with 60-66 know-how.
Hambone


~ HB
1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery
1962 Chevrolet C10
1962 Suburban