Places to find turbo &/or supercharger:
1) search in the forced induction forums for either "turbo charger" or "supercharger"
2) Streetflight makes a badass turbo kit and supposedly has great service. You'll have to contact them, I'm not sure what the email address is.
3) At least 2 or 3 of the websites listed in the parts sources section of CEG website (not the forums) have the vortech supercharger kit.
If you are new to this website, many, many things can be found by using the search function at the top of the screen in the forum, just make sure you choose all posts and select the corresponding thread category for whatever you are looking for (i.e. choose "duratec maintenance" or "troubleshooting" if your V6 contour is having issues.
PM me if you still can't find what you are looking for.