I've cut down my shackles to about 5 1/2 inches and its now sits level,(It was about 1 too high in the rear),no double shackles,,no buggy leafs,,no rear blocks and I like it..Flex it good,,with all the rear body hanging off I get a great tranition from tire to spring to bumber,,works well in the rocks so far..About as good as its going to get with a full length runner..
There are pics floating around in the rig gallery if you search my name,,As fas as I'm concerned its the best set up to put on a runner,,and cheap too..