I have for sale a couple months old Duramileage power/economy 3 position (30/60/90hp) shift on the fly module for 2013-2016 Cummins diesel powered trucks. Works great, absolutely nothing wrong with it! I just sold the truck that it was on, that's why I'm selling it. I also have a slightly used K&N drop in air filter for sale for the same model years trucks. $500 firm for the module, $50 firm for the filter. Contact Joe at 913-244-3829 if interested.