Well, if you tow heavy it is the only way to do, or you can always buy a 2001 and fix it up.
Read this. Obama was able to take a second shot, now the rules even go further. You have to ask yourself why? Because liberals don't drive 2500's. And the new politics is literally attack everything the other side is doing. Banks got fined 500k for having a DEF delete, or something like that. If the 2017 standards stay, no more choosing gear ratios. I mean the 2010 were so good at limiting emissions, this constant pushing the bar is nothing short of a war on trucks.