Many thanks Dave
K56, those shocks will work perfectly. They may be 1" longer than the standard 56 K shock. In 58 HD offered the longer shock as standard equipment or an option, not quite sure which, to offer more "road clearance". Standard length or 1" longer they will look and work perfectly. And DChasteen's parts are the best. Bid with confidence. I have many of his parts on my 56 KHK. For the true purist they have the early Sportster A - B stamped lower cup. 56 K's lower cup would be stamped "R" but look the same and function the same as the AB cup.