Lifting backend of car up

I've got a pair of +2 leaf springs made by Eaton that I pulled off my '67 Barracuda. I thought I already had them sold, but the buyer hasn't contacted me back about them for over 6 weeks. I was asking $50 plus shipping. The springs look almost like new. My only reason for removing them from my car is that I wanted to drop the rear. I will contact him again to see if he still wants them.