I am tring to work on setups in nascar 2003 for the bgn and wanted to know want the diffrence is between the cup and the bush setups are.

I tried some cup setup on a bgn car and wanted to know what can you change on a cup setup to make it work on bgn

thanks
yabaa

GNS cars need taller gears, maybe a little more rear weight / track bar and minor spring and tape adjustments.

GNS Cars also I found, can be run alot looser and for longer. Tires don't wear as fast, but you can't run em blistering hot all the time. All the stuff Volker said, you can get away with more camber, but not more rear track, I found that you can cause them to break loose because they are lighter with just about the same hp engines.