does a lighter car [2000-2500, 500-550hp, 4.88 gear,33" tall tire] need a tighter or looser converter to be comfortable on the street compared to an all out track car ? i realize this is a stupid question, as there are no real concrete results to compare to, but a long, long time ago, i remember something about the weight coming into play as an important ingredient in determining stall for a light weight car. insights into this thought, and help for my stupidity ?