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I have 4 switches for my suspension that are mounted in the lower part of my dash. I want to get rid of those switches because I now have a switchbox. How can I go about filling those holes that are left over?
 

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I'd probably go over it some fiberglass or something along that range.
 

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use fiberglass mat on the back side, sand it down so it will have something to stick to and then use bondo or dynaglass from the front.
 
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