On eBay https://www.ebay.com/itm/153517360783 and also listed here http://www.914world.com/bbs2/index.php?showtopic=229100

ONE Only! 914-6 GT Koni Dual Adjustable Rear Racing Shocks. Restored and converted to 'coil-over' springs by TrueChoice, perfect in every way. Two of the three shocks are now sold, ONLY ONE SINGLE SHOCK IS AVAILABLE. If interested, email an inquiry to ajserrano at msn dot com - Thx!