The seat won't work on the tbird :-D you should send it to me so I can put it on my legend :razz:
But really it will work. You will need to add the lock and drill a hole in the airbox cover on the left side. The bolt holes are on the airbox and the rear frame of the bike for the lock. Because the frames are a little different you may have to play with the rubber bungs under the seat to make it work just right. You can get the lock from either a triumph dealer or a kawa dealer as its off of several kawa bikes. You may also have to reverse the position of the locking pin under the seat so that it will fit. But with a little fiddling you will get a nice comfy seat.
Personally I would send me the seat though and save yourself all the trouble