Does anyone know if the compact spare is the same size wether you have 20" or standard 18" wheels? A silver R/T came in at a great deal but in Silver and without the compact spare, Hood/Fender stripes, and in 18" wheels. It has all the other options. White was my fave and the color I was going to order but I guess silver is OK. I'm going to see if he'll through in the compact spare but I need to make sure that the one he gives me will be for the 18" wheels. Thanks, Craig