Except for my current '65 all of my trucks had/have dual tanks and it is a great thing. My current '65 will get dual tanks when I redo the bed wood. The added range, the peace of mind knowing you have extra fuel if needed, and not having to worry about no gas stations is huge. I highly recommend dual tanks if you have the means to add one. You won't be disappointed. My '81 has the factory switch, valve and tanks. My old '65 had the manual valve, very simple and effective.
