I had a goal of running at least an 11.99 with my basically stock GT500 but also on the OEM tires. Final pass last night I managed a 1.93 60ft and banged out an 11.91@120! Fastest time I have seen yet for a stockish car especially on OEM Eagle F1. No tune...no pulley...just a shifter and mufflers pretty much with resonator delete and filter. Driver mod FTW!