Set of rear springs, never installed. 1.6" drop. Includes a set of Prothane black isolators. These were for my 68 Ford with a Mark VIII rear suspension, but decided to go with coilovers instead. Got them up on ebay 150 shipped, will sell here for $130 shipped.

Also have a pair of 5 x 4.25 to 5 x 4.5 wheel spacer adapters, 1.25" thick. They are used, but work awesome for putting a set of Mustang wheels on the back of your Mark or Tbird. $30 shipped