nhra requires a firewall seperating the cell from driver compartment in all fuel cell apps. aluminum of thickness .032 or steel of thickness .025. it should be behind the rear seat and be sealed all around. also a ground wire must be mounted from a bolt on the cell to the body of the car.
cut out the spare tire well and place aluminum or steel there to make it flat. if you cut a hole for the sump to sit in then it must be covered on all sides by metal.
tech is very strict about fuel cells so be sure to do it right. also why do you want a fuel cell in your car?
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