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well since being i already have a 3 inch exhaust it sounds like the stage 4 is kinda my path, and a cluthch will be later in the future
i could have bought a 3" when i went s2, but couldn't decide between exhaust depot, billy boat or the perrin 3" system, so i just played it safe and went with mopar. i'll probably go with billy boat 3". still haven't decided on a clutch, but a tech at agp turbo said the factory clutch will last a very long time with the s4 kit which i thought sounded a bit odd.
I did not purchase the s4 kit, however I do have most of the parts it comes with. Plus some
i noticed two turbo upgrade options for the s4 kit - 50 trim ball bearing and the gt3076r, which one would be the best choice for mainly street/not much strip time and mainly a daily driver on pump gas? also considering that i might run into an unexpected s3 out on a deserted highway somewhere that i may need to beat up on.