Get a set of catless DP's and you will prolly make your goal, the 3in TB would be nice but I ran 400 WHP on 26 psi with a 3 in catless DP and a stock catback on a different platform, TBH, tuning wise the little bit of exhaust restriction actually helped control the boost curve better up top.
Thats just my thought on it technically, personally I would just get a 3 in catless deal if I were dropping monies on a TT kit.
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