K30 15-20 mpg?

[Evane201]

Hey guys,

In the past few months I've totally fallen in love with square body trucks. In perticular a k30 SWD. So now I've begun the hunt for the right one for me. This truck is going to be my daily driver so I'd like it to have "decent" mpg. Hopefully in the 15-20mpg range. Now I know that a 454 won't do that for me so I'm either thinking a 6.2l diesel or a cummins swap should do the trick. Which one will yield the best mpg? I don't plan on doing any serious towing and probably not over 100 miles so either motor should be great for me. I also would like to have a 3-4 inch lift with 35" bfg ko2s on a flatbed. Is this a feedable goal or am I just trying for something impossible? And is there anything else I could do to increase possible mpg?
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