fuel delivery problem

You got two brand new pumps, and neither on of them puts out what it should...chances are, it is not the pump

So, IF the pump is good it is either not getting the fuel in...or it is not getting fuel out

Now, in order to get fuel OUT of the tank, you need to be able to get air IN to the tank
So check that
We talked about connections on the fuel lines, did you ever address that?