Tom, I've read the OP's post. (Welcome OP!!!!). And have the same questions, but how do you know it's going into a truck?
And to the OP, are you looking for power, reliability, MPG, lowest cost, or some kind of compromise of all four?

You will need to list the specific parts that you have that will be going into the build, that will be. HUGE factor in the advice you get.