Any modern engines or engine builds for modern results?

1970boy said

Goals would be as much mpg as possible without giving up too much power say 300+? Mpg 25+? I also want it reliable (daily driver)

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Magnum 5.9,mild cam E.Q heads,a999 transmission,3.55 gears.....My opine...Contact MagnumMopar here.....He is in Oregon,cuts through any B.S with honesty...... Trailbeast has done some very good things,with overdrive transmissions(and this very combination)....Hopefully ,he chimes in,or send him a PM,,He's a really practical dude....