There was only the f1 or f2. F1 single front disc. F2 daul disc. At the time u could either have the k6. 4 pipes. Or f1 about $1600. Exhaust header diffrent between f or k series.. The next f boldor series were twin cams
Thanks Bob, It's an F2. Not sure there is any difference tween F2 and F3.
Dents? Nah that’s patina or add a row of similar dents following the same line around the tank, give it that Steam Punk look.