As long as you use the gauge that came with the tank, it should work. If I recall correctly the Vans around 76' came with a 28 gal. tank(metal), but the option was a 36 gal. tank(plastic), as in the photo. I had a 72' van and tried to install a 36 gal. one, but it would not fit. had to keep the smaller one. The 340 I had in it sucked the tank dry often. Vacations were a bummer.
