I can think of ways that it <i>might</i> work, <b>IF</b> the Supah is configured a certain way. It <i>might</i> be possible to use the piston-end components in a plain coupler with a minimum amount of extra work (just drill a few screw holes in the coupler).
Since I don't know the details of the Supah internals, I can't really help yet.
If any forum member does have <b>reliable</b> information on the internals of a Supah (photos of a disassembled valve), please contact me via my listed e-mail. (Sgort?)