To use a banjo fitting on the bottom of the fuel tank, you need the following:
22mm x 1.5 banjo bolt
22mm x -10AN banjo fitting (22mm x -8AN would be fine but I've never been able to find one that I could actually buy).
2 x 22mm crush washers
Re: Garth's comments regarding banjo fittings being restrictive to flow - I also had concerns in this regard since I have a Fontana based 427 cu in, fuel injected motor. The fitting in question is pretty huge (22mm x -10AN), so I decided to try it in the interest of keeping the plumbing as tight to the bottom of the fuel tank as possible. Also, the fitting supplier assured me it would be fine. They were correct as it works fine and does not impose any apparent restriction. By the way, the common application for this fitting is Porsche 911 dry sump.
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