I'm using 55w 5000k d2s on my s2000 retrofit and 35w 5000k h11 for my fogs from retro solutions. there was reviews from airportguy but i was reading most of the review from the club rsx forums. seems like xenon depot owns this domain. which from reading the other threads, seems to be doing pretty bad.
Retro-solutions.com H.I.D. conversion kit's Reviews *pics* - Club RSX Message Board