Thoughts on a mid size pickup?

One thing impressive about the 3.9 is that it is a cast iron pushrod engine with a roller cam and fuel injection. Very simple and trouble free. The basic design started with a 273 back in 1964 and morphed to a 318 then a 5.2 Magnum. Chop off a couple cylinders to make a V6 and make it work. Mopar has always cast their blocks with a high nickel content for long life and minimal wear.