Wow 668-rwhp stock! Why would you blow the factory warranty only to gain another 30-rwhp, it's not worth the risk. Instead learn how to hook the 668 you already have 
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2019 GT350 RR
2013 Boss Mustang
2012 SRT Challenger 392 auto 12:40s 112 stock
2012 Ford Mustang 5.0. Brembo, 3:73s
2010 SS, LS3, Cammed, LTs, 12:20s
2004 Redfire Cobra, Pullied & Tuned
1986 GT, Ed Curtis 347ci, 11:20s motor. 10:30s 100-hp shot
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