Most street friendly boost solution to 1000+ hp?

[irishlsxer]

Block is a low compression 418 ls3. Car will be 60% driver with the definite posibility of road trips, 40% autocross. Obviously 1000+ hp isn't for autocross, so spare me, I just want to see the number before we start to tune for track Time. So, cog driven procharger? Twin turbos? Just tell me what you all think.....