63 max wedge?

1962 ~ 413 'Maximum Performance'

The engine block {Casting #1852029} was a Truck Block.

The 413 Truck Block, had a slightly thicker casting, and
higher Nickel content, and weighed 3% more than the
413 Passenger Block {Casting #2120529}

The block also had minor eye-brow relief-cuts in the Deck
to provide for clearance of the 1.88" Exhaust Valves.

Is that correct 'Rusty'