Look in my old posts on putting in a fuel cell.I picked up a 19 gallon RCI fuel cell and mounted it in.I haven't made up a new skid plate for it yet , but will eventually.I also put in stainless braided line , an external holley pump , and dual fuel filters.The truck runs great with this setup , but you will have to fab a way to mount the cell , and make up a fuel filler for the truck.

If you don't mind a little fabbing ,this is the way to go.I can drop my cell in a matter of minutes , only 4 bolts holding it on like the stock tank , and my lines are long enough to reach the ground.There is really no reason to drop it with the external tank , but I figured you never know , might have a reason to drop it some day.