Hello XXXXXX XXXXXX, I'm Chris, a current Ford Lincoln Mercury employee.
Thanks for visiting Just Answer. I will do my very best to help you resolve your concerns.
If you choose not to buy the correct part then your stuck with fabricating. You may need to lift the bed off a little to allow for assembly. I have found and use often. The 2 inch exhaust is the perfect size for some of these tight bends and it can be bent at greater angles or flatened much easier than straight filler neck hose. You can use portions of hose and pipe and hose clamps till you get it lined up to the filler neck.
Ford Technician
Ford trained Tech. Trans, X-fer Case, Steering & Suspension & Brakes, Engine, Electrical