Something similar to Lil Red's setup that I used at Edge's event in 2005 would fit your criteria. It produced 400+ on just #2 and 500+ with nitrous. An ECM with two programs would do it. The lower level used for towing and daily driving, and the second for the track. No second CP3, and ran with the stock turbocharger and otherwise stock engine. You would need a trans upgrade though...

Jim