There's another Boxster owner out there on other forums that has those wheels on his red 987. I didn't like them when I looked on the website, but after seeing htem on his car, I started thinking maybe I'd like to get a set for myself.
But, there's two other wheels on Champion's site that they only have in 997 sizes and it sucks because I like those two wheels more than the other four they offer for both 997 and 987. Argh.
http://www.championmotorsport.com