psi of boost? or is upgrading to 555's and bigger ic's a MUST??? i'm strapped for cash and i would like to just get the turbos for now, and then the 555's later along with intercoolers at a later date. basically, if you could look at my setup in my profile and let me know if i just slap these tubos on and keep the same setup (plus downpipes i'm getting soon) will i be ok? and, how much more RWHP do you think i'll make with these turbos compared to my stock ones at 352rwhp and 398rwtorque? my injectors are stock but only 2 years old, and i run very rich so i think i might be ok at 15-16psi on these turbos with no other modifications? sorry, i'd email all this but i'm outta town. thanks man