I'd go with the Mopar in tank conversion kit without a doubt. At least you're in the desert and "IF" you choose to go the "on the frame rail" route it won't be subjected to snow/rain like the few I've replaced that corroded up and failed. I prefer the in tank pump. It's a proven unit, keeps cool submerged in the tank, no splicing fuel lines, electrical is a clean, sealed, easy install.