540 4.375 bore X 4.5 crank. Not built yet. It will be going in stock trim 69 charger with hemi 4 speed and 4.10 Dana.

Cast iron block
Indy aluminum heads (426-1 Legend heads)
Indy roller rockers
Custom solid roller cam
Crane solid roller lifters
Eagle 7.1 rods
Eagle 4.5 crank
Custom Diamond Pistons (11 to 1)

Should be fun!!