I think 13's are possible depending on what gears you have. I have 3.90 gears. The coupe is lighter than mine,your probably lighter than my 275 lbs and you also have about 5 more horsepower
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3.90 MOTIVE GEARS,ACCUFAB PLENUM AND 75MM T/B,MAC CAI,STEEDA UNDERDRIVE PULLEYS,O/R PROCHAMBER WITH DYNOMAX ULTRA FLOW MUFFLERS,DIABLO CUSTOM TUNED AT HITECH MOTORSPORTS 234.24 HP 271.38 TQ. 14.012 1/4@98.72
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