I would just swap in a mild 5.0. The amount of money you would have to drop on that V6 turbo build would be right about in line with the 5.0. Maybe even cost more. As far as V6 turbo "kits," Im sure they are out there but I cant think of any off the top of my head. As for swapping in the 5.0, if you end up going that route then Hellion has a direct bolt on "kit" that supposedly makes right around 400 hp on a factory stock 5.0. Ill see if I can dig up the article somewhere. Its a pretty old one.