This is an early oil tnak, as evidenced by the curve in the leading edge and the mounting studs.
It doesn't have a hole for the level sender, so I believe that makes it correct for a 67-68 Normal, but not sure.
$400
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http://i61.photobucket.com/albums/h4...pskw1spijx.jpg
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http://i61.photobucket.com/albums/h4...ps8husn4l5.jpg