Leon contact Scott Brown, he has some good info on these engines. Over 426 will require a custom crank and getting rid of the factory reluctor wheel off the crank. No big deal as you will prob just run a external crank trigger anyway. No one has really built one of these engines for nitrous, But imagine this, 426 cubes, sheetmetal intake, fuel injection, 2 foggers could be 4 stages of dry nitrous.....I know sounds pretty nice Oh yea they have been making in the 800 - 850 range already NA with these engines.....best part is they are considered Small Blocks by most racing sanctions , at least for now...LOL