Thought I'd ask...I am looking for a new 4K (or more) RAM expansion kit with schematics for an Altair 680b that I can build myself. Ideally the kit would build an expansion card and operate like an old RAM card. An old vintage RAM card would be fine too, but that'd be expensive and I assume there are none to be found at this point save the rare luck. I am not sure if you can still get them from stockly.com. Thanks Bill