I would put it on Ebay. That is what I did with my SHO Shop pulleys. I got way more than I was expecting to get for them. Everyone on this site is anti-underdrive pulley, so you would be better off selling it elsewhere.
Speed kills, but it beats going slow!
Simon Langley Black 98 SVT EO (#2119 of 6535) 269.3 FWHP, 195.4 TQ 14.123 @ 97.36 All go, and no show! Vortech, Quaife, Driveshaft Shop Stage II axles, Magnecore Wires, Custom True Dual Exhaust. CDW-27 1/4 Mile Registry