Think so.?.? (Don't take that negatively)
I have located a tank for $100. My initial inquire was from a random thought on increasing capacity. I figured that since the H3 was basically the same frame that it might be an easy candidate. Not sure how much a custom tank costs, but I can weld one up myself. I dont have experience in fuel tank design and I don't currently have tons of free time or equipment at home to fab and weld. Wish I did though...
if the mounting locations are the same and it fits under the bed/cab, it shouldn't be much effort from there right? Aside from electrical connections and filler neck connection location. What else needs to be considered?