I have seen one hybrid board configured for 128k on eBay before but never in person, still want to grab one at some point. It was for the 128k's that have the 128k badging on the back. Kind of funny Apply still sold the 128k after the 512k came out as a cheaper option I guess, so pointless though considering everyone basically upgraded their 128k to 512k in under a year from purchase because of how useless it became so quickly.
Nice board BTW