You could take it off and bend the hangers right below where they already bend and bend the previously bent area straight, that's an idea. You could do that for all the hangers if they're the stock style hangers but it won't be easy.
Good luck,
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Mustang Parts Specialties ripped me off, it could happen to you as well.
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT