Looking for 70's or 80's Automatic Husqvarna Dirtbike

[Automatic Jim]

I have ridden MX and trails most of my life. Unfortunately I had an accident several years ago and now have a below knee prosthetic leg on left leg. I get around fine and can ride a dirt bike still but I can't shift gears because don't have workable ankle on left side.
I thought the old Husqvarna Automatics would be a great way to ride again. Please if anyone knows of any model of the Husqvarna Automatic dirt bikes for sale please answer this thread.