I have a 2003 Mustang Gt Convertible with a Saleen Body Kit. I have not lowered it at all and am planning on replacing the 17" Bullitt wheels with a Saleen Style wheel. I want the staggered look with a much wider rear tire. I need direction on the choice of 18",19" or 20" rims. The 18" wheels I am looking at only come with one width. The 19" and 20" wheels come in different widths. I also would like to know suggestions on tire sizes. If you have a set up similar to what you are suggesting pics would help too. Thanks for the help.