Crafted from .063" 3003 Aluminum by a friend of mine. Looks great polished out. One available. $150 plus S&H. Origin zip is 46203. Mounting hardware not included. Thanks for looking. This seat was made on a 78, but fit fine on my 82. It is not wide enough to fit an early frame, but I can have one made if that is what you need. Here is an image of mine polished a bit and upholstered.
7 3/8" FRONT WIDTH
9 1/2" REAR WIDTH
16" SEAT LENGTH
25" OVERALL LENGTH