Originally Posted by Al Tuna
That looks like an SL, check the date on the Steering head yolk.
the date is a 7/75 it says xl100 on the headstock label.
sl's had flat fenders with no "bob tail" in the rear.
the tank on it is off a CB125 from about 76, its pretty beat up. but i have found a couple tanks i can make work (not going original here)