[bobmannel]

Thanks to those responding. The 6-bolt 289 HiPos (65 and later) most often had the VIN and not the numbers I am investigating, which are only on the 5-bolt (63 and 64).
I have a 63 Fairlane HiPo. The engine was assembled on 3D9 (April 9, 1963). This is not the block casting date, but the one stamped in the block just forward of the driver's cylinder head. The sequential number is 482. This was also painted on the rear of the engine. The stamping is on the boss just above the Z-bar mounting stud. Photo of my number included here.

Regards, Bob Mannel