Needing to put longer shocks on a Sami a guy at work has. We used the forklift to lift the tire to flex it for measurements. When lifting one side we measured 15-1/4" and 19". Lifting the other side we got 15-1/2" and 19-1/4". When looking for new shocks do I need to go an inch shorter and longer just to be safe? Or even more than that? Just need something super cheap so we want one that's available not custom made.