This filter was only used on earlier Vanagons with the filter before the pump. It is a plastic cube. Also for 1974-1977 VW Bus or Type 2. The best way to be sure your are ordering the proper filter is the look under the van (sliding door area).
If you wind up with a gas tank with a smaller outlet, you can also use this filter as an adapter. It can go before the fuel pump and adapt the 7mm outlet of the early style gas tanks to the 12mm inlet of the fuel pump.