I'm about to start my rebuild (2000 explorer 5.0)and I'm unsure about a few things. I've decided I would like to add boost or nitrous unsure about which one, leaning more toward nitrous. Would I need to upgrade my connecting rods or will stock work? And other then pistons what do I need to upgrade? Lastly would getting the GT40P heads ported make a real difference and how much does it cost?