65 barracuda foam fraim rail/firewall inserts

Anybody remove or replace these?
If so what material did you make new ones out of?
Im painting the fraim rails, and im removing undercoating with a torch and dont want to light these on fire,would also like to paint behindthem.

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Never put mine back in either. Just went through where you are currently at in November. Painted my barracuda on New Year’s Eve.

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