Another one just showed up on ebay in Transparent Orange (the color of mine):
http://cgi.ebay.com/Fender-Left-Handed-P-Bass_W0QQitemZ280228224855QQihZ018QQcategoryZ155300QQssPageNameZWDVWQQrdZ1QQcmdZViewItemRegarding the Hot Rod/Hot Rodded differences, I had heard that the earlier ones had rougher fretwork and cheaper feeling control pots, as you mentioned, so the newer ones had rolled fingerboard edges. I honestly don't know which version I own unless I have another one for comparison. The pots and frets feel okay to me, but I don't know if they represent the "improved" version or the original version.