[ultra]

Cost no object: D3PE (beautifully done kit, like the placement of the turbo).

Realistically: Avo kit, because of the price as well as because of the 'stealth' factor.

A previous poster had it right though: by the time you add in all the extras such as gauges, a full 3 inch exhaust and possibly boost controllers (although it seems that most kits come with boost control solutions) you'll likely be paying a grand or so more above any of he retail kit prices by the time you're fully up and running.

Also, possible cooling issues with both SC and turbo kits in 'extreme' track conditions need to be better tested, documented and resolved by real world end users before I buy anything. I'm guessing that an upgraded radiator, oil cooler and fans will become must-haves for the track F/I guys regardless of turbo or S/C.