Those are good heads and would likely give it good power. However these heads have small combustion chambers so I would check the pistons, are they flat tops? if so the compression ratio maybe too high to keep it out of detonation. If they are aluminum if memory serves than they should be okay at 10:1 providing the aluminums faster cooling properties.
Run a 180 thermostat, cold air induction if possible, make sure the vac advance is connected to a full time manifold port and you should be okay.