Well, my little ones are not little anymore, so, if anyone is interested....

Trek Tandem Tag-a-long, 24" wheel, 6 speed:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=220141990323

Ride2 Crank Arm Shorteners:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=220141990357