Just a question, but wouldn't it be easier, cheaper, and safer to have a tank or drum secured in the back for extra fuel? I think the jerry cans look cool in the back and what not, but the extra work for mounting and tje costs of the jerry cans compared to an extra tank or drum in the back seems odd to me. Especially for the amount of fuel you can carry in an exta tank or drum compared to five or ten extra jerry cans. I know everybody has their own preferences for what they like, which makes all of our trucks unique in their own way. I keep a 55 gallon drum in the back for wmo and such standing upright up front by the cab secured by ratchet straps. It blue and ugly but one of these days I'll paint it to match my truck.