You guys want your cake and eat it to. Let’s see 700 horsepower NA and on pump gas too. Now pump gas can be anything from 93 octane to E85 so I’m guessing E85 would be the smart move.
That's only 1.68 HP per cube. Although not easy certainly not impossible. From what I have been told by some one who was doing it after 2 HP per cube on pump gas it gets hard