Manifold HP

Indeed so. If your up for the expense, have at it. In my wives roller 360, I used a Comp Hyd. roller. It is a bit of a different build than yours but still the same idea. The extra advantages are the cubic inch advantage, headers, ported Edelbrock heads & 1.6 roller rockers. The stall is 2400 and the 8-3/4 rear has 3.55's on 26 inch tires.
And goes like scat!