Manufactured from 1958 - 1962. 348 and 409. If it is a 409, there be much bigger demand (fewer were made), even the 348 would some interest if good shape. What carb is on it?
14 bolt carriers all have the same spider gears. this how I welded (with Angry Fab help).
Edit: All except limited slip or Detroit locker or G80 (gov-loc)