[cecil98]

88/40 means the wheelbase (center of axle to center of axle) is 88" and the front of the motorplate is 40" from the center of the rear axle (that's called engine setback). There are cars that are 86/40, 87/40 etc. There are also 39" cars but I believe they're not suited to wing racing. Some wing guy can get on here and tell you which is best for what you are going to do. I have some friends who run pretty good with a wing. They have an 88/40 Maxim chassis with the raised leftside lower frame rail. Most 40" chasses work fine with, or without, a wing.