A build like this should easily make 1.25ft/lb per ci.

You have to buy a crank, rods, and pistons anyway...... the extra cubes are free.
I’ll take the extra 80ft/lbs of torque for no additional charge please.

The Moroso chart shows 650hp for a 9.80@3300lbs.
I’d be targeting a solid 10%+ over that to account for a less that optimal chassis set up and air quality/density.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads