a galaxy A kit will work in them. Also a expo 100 "N" kit will work
Depends on your definition of "work"
The '2824 PLL clarifies and does the SSB offsets by varying the 10.240 frequency slightly.
This is halved and then tripled to 15.360 and mixed with the VCO.
The offsets are preserved by this math stuff and the radio operates at the correct frequency for AM, USB, and LSB.
These "expansion kits" inject a new signal around 15 to 17 Mhz to trick the PLL into going to places it wasn't intended to go.
The problem is they have a fixed offset that can only be set for one of the 3 modes, and most don't have a clarifier offset.
This reduces the clarifier range by about 75% and means it's impossible to center the clarifier at 12'o'clock on all the modes.
Like I said before, these kits might let you hit 555, but your clarifier range will be lousy and you'll also have problems centering LSB and USB at the same position of the clarifier.
Of course, you can add 2 more offsets and a clarifier circuit to the kit, but it's not worth the trouble.
Better to change the PLL if you have the patience / knowledge, or buy an "export" radio if you don't.