It may not help or hurt your 60' or et, but I can tell u from experience that it can affect your reaction time. The lower the car is in the front, and depending how hard u launch(whether ur pullin the wheels up or not) will obviously affect when & where ur breakin the beams. And if u lower the front, it may involuntarily raise the back due to changing the weight center of the car. By lowering it, ur putting more weight towards the front.