I wouldn't thank you for any diesel built after Oct 03.

Unless you put over 50k a year on it you won't live long enough for the fuel savings, if there are any, to pay for the diesel upcharge in the price of the truck never mind the thousands all the emissions after treatment crap is going to cost just to keep it running after the warranty runs out.

If you just have to have a diesel, find a nice low mileage 24 valve pre common rail unit and be prepared to pay the ransom. Nice ones are pricey.

As high as the price will be for a 20ish year old truck, it won't be close to 2018 Diesel Dodge money.

Kevin