Ok, here is what I want opinions on......right now I currently have what is in my sig., and George (Big Dipper) will be giving me a Stage IV upgrade in the next couple weeks. After that I planned on getting EFI live and just calling it quits and being happy with my truck for once....BUT....now I'm thinking of a Turbo upgrade. I've done multiple searches and EVERYONE says something different.....so my question is, if I want to keep my truck the way it is....big heavy bumper and 35's.......what is the highest HP I can go without doing engine mods.....and what do I need to get there? If I get a single Danville replacement will it keep my EGTs low and still give me good spool? Should I look at twins? Has anyone ran or heard of the II twin kit? Any info or help? I just don't know the best route to spend my money and on what....I def. want at least 550 to the rear wheels and don't want to have to worry about EGTs...