Maybe try Ebay motors-vehicle parts and accessories-type in Vanagon. They
usually have a few fuel pumps -new and used.Before you replace, do change
filter and maybe use a coat hanger to ram out the steel fuel outlet line in
the gas tank.Judging from the resistance to the coathanger, there is a sock
tied on the outlet, inside the gas tank.Had to ram many times to remove
this sock. Plugged up?  I think most pumps are replaced prematurely. I had
a '85 w/pump noise-in a new pump!The PO had replaced it and still had
noise.The solution was to ram out the outlet.Pump replacement is straight
forward,but be aware that many new pumps use eyelets to make electrical
connections(cheaper pumps) as opposed to stock push on connectors. You will
have to convert
 these.