I have a set of new universal seat sliders that I'm not going to use. $50 shipped. Figured someone here may have a use for them.
The center arms are sized for 13.75" center to center width on the sliders, but they could easily be bent wider or narrower.
(http://i302.photobucket.com/albums/nn89/74jawa/For%20Sale/IMG_2530_zps32ec68a2.jpg) (http://s302.photobucket.com/user/74jawa/media/For%20Sale/IMG_2530_zps32ec68a2.jpg.html)
(http://i302.photobucket.com/albums/nn89/74jawa/For%20Sale/IMG_2523_zpsc6e0fe8f.jpg) (http://s302.photobucket.com/user/74jawa/media/For%20Sale/IMG_2523_zpsc6e0fe8f.jpg.html)