[dubie]

I have 3:73 non posi in my truck right now. I also have 2 parts truck that each have 3:08 (i believe) non posi in them. Would it gain me much on highway travelling to swap out the entire rear end to the 3:08 ? At 60 mph my engine has to be running at about 2800 rpm or higher right now. I am running the original saginaw 3 speed as well. I plan on swapping out the tranny in a couple years, but was wondering about the rear end swap for now