fiberglass is easy, and if you take your time it wouldtn look weird if you patched that hood up, but i dunno what the top looks like. just get some fiberglass mat or whatever, resin and hardener, mix it up, use it like paper mache, and lay it on the underside of the hood. then youd have to use a body filler on the top to make it nice and smooth, which is the harder part.