I think it depends on the type of H4 you buy. I believe you can get both single and dual element bulbs for both H4 and H7, but I'm not sure. It's been so long since I bought them and I was soley focused on the physical size difference between the H7 and H4bulbs
Hey! Welcome! Thanks for the compliments! Yes, the bike comes with the dual elements already. You only need to put the connection to it. Now, with the '08 model, the wire isn't green with orange dots. You'll see two green ones and it will be the brightest of the two. Just splice in your wire, solder and tape! Done!