yeah it's kinda hard to say just by the question......I mean it's possible if under the right conditions and mods....anything lower than a 3.4 is cam,headers and/or intercooler teritory...from my experience it would still be cutting it pretty close running a 3.4 with headers,1.9 rockers and other normal supporting mods like fwi ect and be kr free...well you'd have to have a good tune 4 sure.
I mean with all the mods i have i am only runnin a 3.2...now i could probably drop to a 2.8 with my same mods as long as the tuning was there...and full exhaust would help to a point
