That is part of the emission controls for the 1970 cars. I know that the
1600s had them but I am not sure about the 2000. It mounted in the trunk.
>From: "Nathan Ruffcorn" <firstname.lastname@example.org>
>Reply-To: "Nathan Ruffcorn" <email@example.com>
>To: "datsun list" <firstname.lastname@example.org>
>Subject: Fuel expansion tank on ebay?
>Date: Sat, 11 Nov 2000 17:21:32 -0600
>There is a "fuel expansion tank" listed on ebay for a 70 1600? I can't
>imagine this being a roadster part but if so, where is it located?