We wanted to share information on the 95-99 and 00-05 Neon fuel pump assemblies.
They are essentially the same, and can be interchanged, however there is one big issue that makes them not really suitable to be swapped.
The design of the fuel level sensor is designed differently, and what this means, is that if you install a second gen fuel pump in your first gen, the pump will work fine, however the fuel gauge will display backwards. So if you have a full tank, it will show your car is empty. The same thing applies to the second gens, if you install a first gen fuel pump assembly it will show opposite fuel level as well.