I been assigned judging at our uniteds and don’t think there is a written rule as to undercoating location or volume. But Doug Jennings, Scott Worth might be people you should contact. I put it in the wheelwells to protect the fenders and cut down road noise. After all the work to get the stuff off I hated to put it all back. I would put heat sheild material in the tunnel, no one will see it and if you drive long distance it would cut down on the heat. I had my car TAC’ed in Montana, it passed in minutes, because they could see everything. Too much it looks like your hiding something. Spring made it to northern MI!
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