I recently bought a '98 Cobra with '00R wheels on it. The seller said they are 'authentic' 2000 Cobra R wheels. How would I be able to confirm this? I'm not sure if he means "authentic" as in came off of a 2000 R, or just an FRPP reproduction, or something else. They do have the red R centercap, so I got that going for me haha. They are the silver/painted versions, not chrome. They are 18" wheels. I looked for any sort of stamping on the wheel but didn't see anything too obvious, but I didn't take the wheel off. I'm not sure of the width - there are 275/35 tires on them, but that doesn't tell me wheel width. Is there a way to measure this with the tire on there (if the width is required for any confirmation)? Any help is appreciated!