Major Ledfoot
These days, used 140 bars are like unicorns, rocking horse manure, and Camry drivers who use their rear view mirrors.
K-Mac (Sydney) do a 24mm front bar or whatever you like made to order. Ditto rear bars, although IMO you don't want to go bigger than 20mm at the rear unless you like mass oversteer.
Pedders (chain) do a 22mm front bar.
iPD (USA) do a 24mm front bar. They do a rear bar, but IMO the mounting points are all wrong.
If you can find a Selby (yellow) front bar, that is the bee's knees IMO.
There are others. Beware of the sand-filled junk that is out there.
Like, they don't even use spring steel for the sway bars - they fill a tube with sand, bend it, and seal it at both ends.