You won't find a LAV III Dan.
Go 20mm like me!
If you can find a Stryker then put the turret from a LAV 25 on it and use the LAV 25 hull for a Bison.
A LAV 25 could also proxy for a Coyote Recce vehicle.
Might be close enough for jazz....
Full Battle Rattle miniatures is planning to commission a LAV III if their infantry make money.
But that's a couple years out and just wishful thinking for now.