Just installed an HID kit on my wife's 07 Streetbob. Gotta tell you, they look sweet. No more riding with the high beams at night for her. Fixing to put some on my 06 Roadking Custom this weekend. They 8000k with the slim ballast. Let me tell you, they were somewhat of a headache finding a place to hide them i did it. I purchased my kit at a shop here in Houston off Jones/FM 1960. The name of the shop is Parts Solution. I will try to post some pictures of the Bob later.