I am trying to improve my 60' times. I run 420 RWHP in a 2006 GT automatic. I am running Nitto NT05 tires. I cannot get consistent traction having launch times varying from 1.70 to 2.25 sec. (mostly 2.20). I am wondering if anyone has tried the adjustable struts prior to other items such as UCA/LCA replacements. If so, what kind of improvement could I expect?