You can order all kinds of options, but can't specify custom frame sizes. But I know one poster has mentioned have one of the trikes made with an extra long frame, but that may not work on the bikes due to the geometry.
I did get mine in a bit less than 30 days.
An interesting bid here- note that the model being sold is different in several respects from mine, different seat, different fork, etc.-
http://cgi.ebay.com/Vintage-bicycle-...QQcmdZViewItem