I've been shopping aux tanks for a 2019 3500 Diesel. Removability isn't really a major discussion point on the products I see, so I am curious how permanent are these installations? I am on the verge of pulling the trigger on a 2019 3500 standard box and would be interested in an aux tank, but only if I could remove it if it became necessary. I know it's not rocket surgery, but not sure how invasive these installs are. FYI this would be an AUX tank (gravity feed into trucks main tank) and NOT a transfer tank (with a nozzle and pump).