The epa cracked down on them and made them stop making the delete tuneres. So what left out there is what you have to choise from, so dealers have new stock left and then there is the used market. You can run smarty, H&S, or EFILive. I found a 3 month old smarty j67 for $300 shipped. A fellow member email me the ME file for free and now I'm totally deleted. Look at cumminsforum.com also good info on deletes and look in the for sale area.