67 Fastback getting 8.8 rear

After wallowing out the holes on the shock plates everything bolted up nicely. My shocks seem about 1" short with the suspensions having no load. Makes sense because i have the +1 epso springs. Do I need longer shocks or do I just put a little weight on it to get the shocks mounted? I have read that some folks use b-body shocks with the SS springs but those are about 4" over stock. I will attempt to lift the rear with a jack to get the shocks on and if necessary ill replace them later with Blisteins or KYB's. shockplate1.jpg shockplate2.jpg shockplate3.jpg