Alright, that makes sense, how much of a difference does KONI STR.T make?
From stock? A world of difference. Totally transforms the car. Mind you, I upgraded to 19x9.5 wheels and 275 tires all around shortly after my struts and springs, but the car with struts/springs/and tires was totally and completely different in a good way. Much more stable going around turns.
2011 Mustang GT M6 3.31s
Matt HONEYCUTT Tune, Lethal Off-Road X, GT500 axlebacks, J&M LCAs, UPR UCA, Whiteline LCA relocation brackets, Eibach Pro-Kit Springs, Koni STR.T shocks/struts, GT500 strut mounts, SR Strut Tower Brace
Best 1/4 E/T (05/18/14 MIR - no tune, X-pipe, or UCA): 12.920 @ 109.40 mph (2.059 60ft)