The problem is they show them as having identical specs - at least the all black 17" ones I'm looking at - yet they have separate item numbers and only say they fit their specific age range. Other sites claim the 05-09 has a deeper backspace and less "ridgey" aesthetic. I'm wondering if it's a situation where they throw in some spacers to make an 05-09 fit on 99-04's but it's all the same wheel. Tried calling them today but they were closed. Will try again tomorrow.