I agree, your bike looks absolutely beautiful but I have so many more priorities right now with my 850 Commando "barn find" restoration that a tank and seat like yours will just have to wait.
I do, however, have a question for you: how do you keep your fuel lines so clear? I just replaced mine and, although the fuel was fresh, within only 2 weeks all the lines were turning to a "rust" color...
I might be interested in the seat if you were going to sell 'em separately, but I could only afford around $250 (I've also got wheels being done at Buchannan's and various parts at the powdercoaters...) Hopefully mine'll look that good when it's done. Anyway, let me know if you don't sell them together.