Best off buy brand new, i bought mine off Nengun, they seem to be the only online store thats willing to order them, took mine 2-3 weeks for them to be made as they are made to order, and took less than 1 week to arrive. i paid approx 360-270 forgot. and imo, it looks good, for the price you pay for them previously i was looking for superior auto wing stands as they are slightly slanted and cf, but they were too rare as they are discontinued, and too expensive, so i bought the night pager extensions.
http://www.nengun.com/night-pager/rear-wing-spacer