I have a ‘01 suburban with a 5.3 that does double duty as a spare vehicle and as a puller for my fishing boat and my snowmobile trailer. My experience is with older carb’d motors, what are the easiest power adders I can do to this rig? It does ok now, but I’d like to give it more snort when I’m pulling three sleds and have 3-4 adults in it plus our gear and we are headed 7 hours north to ride. I know I can re-gear it, I’m more curious about cheap engine mods.