I bought a pair of seats used and I don't need the second one. It's a black Sparco Evo fiberglass race seat, fits me well (160 lbs, 5' 9", 32-34" waist) and would probably fit someone heavier if they are taller with a similar waist.
Pics can be seen here
http://www.wam.umd.edu/~pknowles/Sparcoseats/
I'm asking $300 for the seat and $50 for the new sliders and used seat brackets (sliders and bracket not shown, in the pic a custom Corvette bracket is bolted to the seat) to go from the sliders to the seat. Would like to sell local, but would be willing to ship, just give me some time to find a box big enough (seats are big to ship). I'm at 20882.