80 Fuel Tank

[Nvbowtie]

I am trying to figure out what sending unit to buy for my 80 tank, I no longer have the vapor canisters.

And the sending units are cheaper with out the extra outlets.
I just need one outlet on top.

There is a different part number for each side and the drivers side is 5.00 more ?? I don't get that, if the tank is the same ??

So what year sending unit should fit my 80 tank and be the same fuel capacity ?

Also- What is the capacity ?

Background: dual tanks, the tanks- look identical. putting back the pass side only.