Synapse is selling a kit for $3995 that takes a stock Cobalt SS from 240whp 260wtq to 371whp 383wtq. That's some cheap powa
Ecotechnik Turbo Kit
Kit Includes:
-GT2871r Turbo
-SynapseTurbo Exhaust Manifold
-SynapseTurbo 2 piece Downpipe
-SynapseTurbo Intercooler Kit
-SynapseTurbo 3 inch CAI
-Turboxs BOV
-Custom Oil/Coolant lines
-Hptuners Tuned File
It's tuned for 91 octane and doesn't include catback exhaust, so there is still more power to be had.
here's a YouTube video of it: