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I have speakerboard right now, however the local tech guy told me it has to be metal per NHRA.. I thought it just had to be sealed..




Really? The sub-structure/bracing underneath is metal, but the finished tray part needs to be too?




If the battery and/or fuel cell is located in the trunk area, then yes, the bulkhead must be sealed with a min of .032" alum.
If using the stock, unaltered fuel tank and the battery remains in the stock (up front) location, then it can be left open.

Brian