1964 Johnson Motors Brochure
Note the absence of the T120C Competition Sports scrambler model. These were formerly supplied to JoMo in pre-unit form, but only to TriCor (in very limited numbers) in unit form. JoMo only received the TT Special competition Bonneville. See the photo of the "Cycle World" record breaking 1963 TT Special at the bottom.
The brochure shows the front stay missing from the mudguard on the TT Special and some restorers leave it off for this reason. It's not really possible to tell whether front stays were fitted to JoMo bikes but it seems strange if they were not. The TriCor brochure has the front stay intact.