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Im located in Sterling Heights where you at in michigan? would headers put me in the 13's because that might be my next upgrade.
I'm in Howell most of the time, and Canton on most nice weekends.
Headers would help a little, but it's not your exhaust that's the real bottleneck here. It's the stock NPI heads, cams, and intake.
If you really want to hit 13's (it's possible already, i just think the odds are really small) just throw on a set of slicks and skinnies, and launch like a **** lol.