A very simple question: could we rattle off some frames that would make good 650b conversion candidates? I'm looking for steel, obviously, but nothing heavy duty. I don't plan to go touring on this thing, so the lighter/more sporty the tubing the better. I am also fine with never sticking something like a 42 in there. 38 would be plenty for me. Have at it!

(or link me to the website that I missed when using google to try to figure this out on my own)