I know this topic has been well discussed before. But I want to toss this out just to make sure. I have a 2003 Retro/S with spoke rims and I want to swap for alloys. It is my understanding that the 16" rear rim from a "C" will install on the rear of a Retro/S as long as I have the matching brake rotor that originally came with the "C" rim ?. . . . . I also have been led to believe that whichever front rim I install, the front rotors are all interchangeable. THANKS.