Yes a nice block and a 63/April/10 production. Most of the early blocks don't have the 352 identifier on the front. Rest of the numbers are foundry ID numbers for molds and such. DIF is for the Dearborn Iron Foundry. Little things. That a nice build you have planned. Yes you'll need a bore notch to clear the CJ valves with a 4.05 bore.

G.

Im still lookin for the other half.



G.