For what you want to do sell everything you have and go dana 60, you will never be sorry. I would ditch the indyhead motor and go g3 hemi too. If you are worried about pro touring and weight I think a good 200-300# off the front would do way more than worring about 50 in the rear. By the time you backbrace and add 35 spline axles, it might only be 25 pounds. The indy motor will never be as fun as a g3, unless you like to work on things. As far as noise, a properly set dana is silent.