How many of us are there? Owners of Dodge based RV's?

Many cars and trucks have the fuel inlet below/at the midpoint of the tank. I know chrysler/plymouth/dodges of the 80s and 90s have a lot that do.
I think the tank is just fine as long as it doesn't leak and you have a good rubber fuel inlet hose coupler to fill tube. One of those vent nipples on the tank goes to the top of fill tube to reduce kickback when filling.
They started sometime in the 90s adding a ball valve on the inlet so if you rolled over fuel would not exit the inlet opening.