Anyone put a fuel cell in a 64-66 Cuda? Bad idea? Fumes?

I really didn't think about doing it that way with my last car and deleted the car door. Looked great, function not as great.

I also replaced the trunk floor with a shaped tub so I could sink the cell down and still have a trunk. This worked ok but was unneeded and added a lot of work sand money to the car that didn't need to be done.

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Love the hood and color! Thanks for sharing tips.