Small Update- Have been searching for a fork that allows for Canti brakes and a threadless headset with no luck at all. Found current front wheel is a 406. So for now at least, I have ordered a set of the Tektro brakes as suggested above. Off to the welding shop to fab a new lower idler wheel mounting tab hopefully tomorrow. If all goes well I will touch-up the paint for now and move on to ordering the listed handlebar stuff, leaving the bike as a threaded headset for now. Want to ride it instead of work on it...!