I did about the same, but a lot fancier on the bracketry. Just ain't as much hillbilly in me. The seats can be hard to find, usually in the larger cities there is a salvage yard that buys them fo resale. Bought mine from an ad on this site. Used was under $200. and Piston even delivered it to Wichita for me.
Here's a couple of pictures.
http://community.webshots.com/user/sf3768