I'm not seeing any currently in production. A couple notes I did find-
Canton makes a billet aluminum one that fits the bill, but it still has a push on hose.
MMR has a hose barb to -16AN adapter.
But mostly considering how simple the geometry is, just the bolt spacing and thermostat diameter, I would check and see if the SBF or even SBC ones would work, even with a little modification. Because there's every type of those under the sun.
And if all else fails it's a pretty simple affair to weld up an AN outlet. Probably cheaper than most of these pieces too.