1976 Slant Six Complete, Spares

Couple questions - Is the engine an actual 76 dated block? Is the head on the motor a drool tube or peanut head? Is the engine/transmission adapter a 60's factory one? Thanks in advance.
Pretty definite (from memory) it is a 76 block, the head on it is a late 70's peanut head I swapped for the stock valve head that came installed on block which is also peanut, rare adapters are factory, came with my 67 A100 w/A727.