Thanks for sharing your page is really helpful! So it sounds like the more available transmissions may be later models with electronic speedo, like this one which can be matched with cable X or electric gauges:
http://m.ebay.com/itm/231422411006?nav=SEARCH
What is a good price to pay for these? Is there any known sources of purchasing them from other than ebay/Craigslist/junkyards?
