I agree with Paul.....scuff the inside of the cover with rough paper and apply some fiberglass matting. Then you can bodywork the crack on the outside if you want with some proper filler.
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--==RPM Resto & Custom==--
1989 IROC-Z Media Coverage:
Chevy High Performance - Readers Rides 4/03
GM High Tech Performance - Tech Article 3/06
Chevy Rumble - Tech & Feature Articles November 2006
Auto Restorer Magazine - Feature Article 5/11
SkinAndSteel.com
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