Hello and welcome to the forum glad to have you join us! I will third what has already been said, you almost have to NEED a diesel to make it worth it. With the HEMI, there are several mods you can do for better fuel mileage but as has been said, probably not going to equal that of the diesel. Much as I would love to have a diesel myself, I have no need for one but good luck and be sure to keep us posted! Lots of great people and info here, so any help you need, just ask and I hope you enjoy the site!