my friends 89 coupe runs 12.43 @ 104 with the cobra setup. The car is gutted, weighs 2710 punds. It just has pretty much a stock gt 40 setup with exhaust and 3.08 gears. The best i have seen with the non cobra setup is 12.81 @ 103. it was a speed density car with 3.08 gears and basic bolt ons. but it had a stock motor. So fords are not junk after all.
but, my nova was faster than my mustang.
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91 LX COUPE, 3.73 gears, 2 1/2 inch full exhaust, 1 5/8 shorty headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam, Windsor jr heads, GT 40 intake with ported lower, world class T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 150 HP shot N2O kit, 190 GPH in tank fuel pump with T-Rex external pump. And more to come.
BEST TIME ON BOTTLE---11.51 @123
BEST TIME ON MOTOR---12.63 @109