Hi I have a set of original 4 leafs I got when I bought a 12 bolt from a guy pro touring a 69 Z28.I don't need the springs as I already have the same ones on my Z28 and I put the 12 bolt under another one of my cars that is lowered so they are just taking up space.They have GM cast in the sides so I am pretty sure they are original as the 12 bolt was a BU rear.I sell on ebay but don't want the hassle of shipping these big heavy things so I was wondering if anyone knew what they are worth so I can sell them locally Thanks!