I own an lefty Epiphone T-Bird that I got back when they were making them for 5 minutes. I like it, it's got a deep low-mid tone drive especially with a pick, even though the Gibson purists dismiss them as sounding nothing like the real deal. They have bolt on necks vs. neck thru on the real Gibsons, which I personally feel gives the bass better attack to cut through the mix than the real T-Birds.
Tokai and Greco make T-Bird knockoffs, but only for the asian market. The Tokai looks nicer than my Epiphone because they're neck thru and I believe they may even be mahogany (my Epi's maple painted to look like mahogany, I believe). The knobs also look better, and the bridge, though not accurate to a real T-Bird, probably works better (most agree the real T-Bird bridges suck).
You might be able to order a Tokai from Japan and have it shipped. Contact Ken at
http://www.guitarshogun.com and see if he can get you one. I just ordered a lefty Jaguar bass through him that's due to arrive any minute, and his price was very reasonable.
Good luck.
