SS Spring Rear Shock Combo, What to use???

I called a place that listed the P4529516 for a manual trans Dart to verify they are available. They said they are discontinued. My 1967 Dart GTS has been restored and I thought I would change the shocks to these since I understand they are made to work with the SS springs I installed years ago.

Edit: Found a place that has four left in stock so I ordered two. http://www.chicagoconnection.us/index.php?main_page=product_info&cPath=2_115_117&products_id=1417