Ordering a new rim (ZR 1 17/9.5) I went to Ecklers Camaro and they have two listed at 17/9.5. The one offset is 38mm and another at 56mm. Which offset is stock on a 99 SS? Could someone also explain to me what the difference is? Also would like to double check and make sure the tires/wheels are in fact 9.5 inches correct? thanks