i used the stock fuel tank but upgraded to larger lines on the diesel side, i would say the stock gas lines would work with a 12 valve just fine but would err on the side of caution on the 24 valves and go larger lines, the filler tube has to be changed to allow the diesel pump to fit or you modify it which wouldnt be too hard, although i cleaned my stock tank and even retrofitted the stock pickup screen to flow diesel. not too hard to do.
RamchargerCentral.Com is a Dodge truck community built by a vast number of experienced owners. Whatever you're thinking about doing from routine maintenance to full-on restoration, odds are somebody around here already has. Originally focused on the Ram Charger / Trail Duster, our members own, drive and wrench on Mopars from the 40s to the current day. It's not what you buy, it's what you build.