I found this one a few days ago and kept it all to myself. I've been exchanging messages with the seller (very nice guy) and got him to take a lot more photos.
Besides the added J pickup, which at least was done nicely, this is a seriously rare and collectible bass. Not too many '73 lefties out there, not too many in olympic white, and almost no "A" neck lefty P-Basses (actually, I don't recall ever seeing one). That has to be seriously rare. And it's only 9 lbs. It's modded, but it's a the real deal: pickups dates, neck date, longer G-string intonation screw. . .
I almost jumped on it, but I'm not necessarily in the market for a bass right now (and I'm really finicky with having low action; I'm always wary if I can get that with these older basses), so I'm passing it on.
http://www.talkbass.com/forum/f126/1973-fender-precision-lefty-w-neck-767246/Seller is motivated to sell. . .
Teaser: