Here is my ‘06 Cobalt SS. It was a fairly simple bolt-on set up when I picked it up, and I originally told myself “this is going to be my fun daily driver, so I’ll leave it how it is” and clearly I did not listen. I removed the factory supercharger set up and swapped to a Hahn s20G turbo kit. The turbo had some damage to the turbine wheel, so I watched a YouTube video and ordered the parts to rebuild it myself. Of course, I had to add some color to the bay as well. Shortly after completing the install, I added a Snow Performance methanol injection kit, and a custom catch can. This set up put down 302whp 347tq @17.5psi on 93oct with 50/50 WMI. Limited by fueling, I then went to a return style fuel system using an OTTP fuel rail, AEM 320 pump, and FuelLab AFPR. The car is currently running 21-22psi and I’ve not put it back on the dyno to see what it currently makes, but it has been a fun ride! Also, I’ve now put ~35k miles on that 20g turbo I rebuilt on my computer desk! As for cosmetics, more “modern” looking headlights, carbon “C7 style” hood, and swapped to the factory high rise wing. I’d love to swap to a larger turbo in the future and push it a bit more into the 400hp range eventually!