Well my idea worked real good the axle nut is about a 1/4" from the pipes.
Now waiting on the pump, should be here tomorrow but... I have to return the gauge, it was assembled wrong at the factory and the glass is not sitting flush with the body, therefore the chrome trim is not flush with the glass, could lead to a water leak inside the gauge.
I already requested a return from Amazon and they refunded right away, pending I return the defective one, they even gave me the shipping label.
I already ordered another one, just the waiting game now.
I'm going to keep this one to finish the whole installation and will send it after receiving the new one, I have 30 days to return it.