We are planing on new stronger diffs and deeper gears. The engine be a supercharge LS3 powered very similar to what we use on our Pro Touring vehicles, except with lower duration and wider lobe center camshaft for awesome low end torque. These engines (donated from Corvettes) we routinely make 750HP and 650TQ with incredible calm street manners. Our detuned torque monster will be pretty square on HP and torque. We will make somewhere around 650HP and 650TQ. A paddle shifted 4L80E borrowed from a 2500HD truck will handle the power just fine.
As far as the lift goes. We do not want it crazy tall, but would a few inches to clear some bigger tires. But all my searching has not revealed what size tires we can clear. Common sense would say with a 3" lift a 6" taller tire could be cleared height wise, but does the increase circumference cause fender interference fore and aft? Obviously wheel offset will play into the equation.
As with all our builds we will make sure to build up the entire system all the way down to 16" (8) piston brakes to stop those big rollers..
The steering, or limits of the steering will be my next exploration mission.
Looking around I see this is way outside the box here. I thank in advance all for any information