I'm looking for a long range tank for a '94 regular cab gas 4x4 pickup. I'd like to get at least 25 gallons, preferably 35 to 40 gallons. I'm not adverse to using the spare tire location seeing I already don't use it for the spare. So far all I've found adds only a gallon or two and that just isn't worth it. For the prices seen it would be cheaper to buy 4 new jerry cans and mounts. I've been thinking of exploring some northern Canada roads in the late summer or early fall. The extra range would be very nice.