Thanks Bruce,
Had a look around and seems it's an AZ2EK-P-2PF chassis where the manual attached doesn't give anything away, but gather the SSB is either 1-857-896-71 or even WS0016301.
Discovered with a Russian site and Electrotanya who gives both SSB options with the same screen.
Flea doesn't list 1-857-896-71 and WS0016301 is awful expensive at £125 a pop from 'The land of the free' - Hear oil drums rolling - Chris.
