Howdy y'all I just bought my first dodge d250 it's a 91 gas model that I plan on converting to a cummins Diesel engine and swapping out the rear axle for a dually axle. I'm hoping that a 5.9L or 6.7L will fit in it.
We'll my biggest reason for the 5.9 is the fact that it's a tried and true engine. I'm not putting down the 6.7 I just dot know much about it. I do however know that it didn't come out till... I want to say 07 and the 5.9 has been around way longer. Making the availability for parts pretty easy. From what I've heard the 6.7 is great but I can't give first hand experience