change your rebound with adjustable shocks.gives you a little tuneability on a marginal track,you are talking reaction times not 60 ft,you get on a crappy track the middle of july when the air temps and sun are baking the oils out of the track you need all the adjustability you can gain for consistency.we had a buddy with a smallblock street dart .car ran a best of 10.50s street trim.he changed cams and gained 60 hp on the dyno.went bacvk out 10.50s.but short times skyrocketed from 1.50 to 1.80.this was with a caltracsetup.all we did was put on magnumforce uppers and rms strut rods and qa 1 stocker star front shocks.didnt touch his tune .car jumped into the lower 1.30s and went a best of a 9.98.stock stuff may work but I wont use it .anyone can do what they want just our experiences