Yeah, I read your link. He doesn't mention the D585. If you research the coil conversion properly rather than spewing out something you saw on one forum you will see that most people suggest the D585 as being the preferred option. All I'm saying is, if you're going to go to the effort of doing the swap, then you may as well use the best coils possible. I paid $280 for 6, delivered; I don't need 8.