looks just like fiberglass holding it in. i bet it's pretty rigid even without the fiberglass if you bend it right.

can't imagine anyone would really need a writeup for this... you cut the hood in a U shape, bend it down, grind the edges down, sand stuff up a little to make it look nice, fiberglass, then get it painted.

when i get some extra cash to have my hood (or my entire car for that matter, it needs it) painted, i'll do this. it looks really awesome.