You want to street drive this thing? 1200 HP with ladder bars. It will spin,spin, spin and nothing else. Thousands of $ to putt around at 1/4 throttle. I've owned a boosted (very mild 600 hp) for over 25 years. Even with 320/15 drag radials tire spin from a roll is a given on the street at any speed in 1st or 2nd. I driven Dizuters mild build as well. It's right at the limit of usefulness as far as traction, and that's with a 2.76 gear. Trust me I like HP as much as the next guy. Just think out your plan before you leap.
Doug