Mine was coated in fiberglass and painted. Not by me though. It started cracking where the two bumps are on the bracket. When you open the hood it will flex the bracket and cause it to crack. I dont know if i would recomend it.
I bonded mine on with West System Epoxy. Then I covered the whole underside with a couple of coats and sanded. When I painted the underside, I mixed some flatner into the paint. That way I got a respectable finish that matches the body color and is washable, but without spending more time than I wanted to spend on that area.
Has anybody tried putting a sheet of aluminum on the inside of the hood? I was thinking about doing it so that I could cut a hole in the aluminum that would fit around the air cleaner. Figured I could build a small tray under the air cleaner with some foam to seal it to the aluminum inner hood so that the engine only breathes through the scoop. Has anyone tried something like this?
I don't have any pics, but sand it, coat with Epoxy and let harden, sand it again, coat with epoxy and let harden, repeat as necessary and spend some time at it. For final work, I used a glass filled body filler. It's not perfect, but it's smooth and it looks pretty nice. I painted mine body color.
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