Hmm. Ok so they don't bolt to the old bracket that used to hold the OEM cats rigid; did you remove that bracket Madwi? Also, how are the exhaust tips aligned in the rear bumper? Any issues with contact? Those are the simple fixes to check out.
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2014 370z Touring Sport Magma Red MT // BP Single Turbo 6467 // 63mm TB's // Z1 Ported Upper Mani // RJM Pedal // Zspeed Stage 3 Clutch // 526 WHP, 451 WTQ
2006 350z (Sold) // 1990 300zx (Sold) // 1985 300zx 2+2 (Sold)
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