I don't think there was ever a cabinet made for the Featherweight. It was sold with a table specially sized for it. The tables are very much sought-after because they are much rarer than the machine. A featherweight table in good condition can cost several hundred dollars.
I would think that other cabinets could possibly be modified to house a featherweight. It seems to me, though, that the featherweight was not made with bolts the way most cabinet machines are. I think it was simply set on top of a metal "cradle" in the table so it would be flush with the working surface.