Will this bore clean up, magnum head content too.

Everything looks right for a worn out bore with water left in it. That is pitting that only a bore can cure. Heads should clean right up with a wire wheel. You sure thats a 360? (Edit, 360 it is) too bad, those pistons are zero deck 360 Hypers. Save 'em for a stock bore block.
Speed Pro H116CP Speed-Pro Hypereutectic Pistons | Summit Racing