At the moment I am indeed more or less out of housings, with no real insight in whether I will get them again.
I do not make money on this, and the design is out there for anyone to copy, but if demand justifies, I might have another run made.
The hurdle for me is that I have to take a minimum order of about 50 pieces, and pay in advance.

For what it is worth: that SuperTigre of yours, its carb should allow for satisfactory adjustments on gasoline, no mods needed.

I can still get the drivers relatively easily (and in smaller batches) so that won't really be a problem, but shipping to the US might be a bit prohibitive WRT cost.