Paint & Body Work - Under hood insulation?

I just picked up an afetrmarket fiberglaass hood for my '95. There is no liner on the bottom side of the hood like a factory hood has, but I know many fiberglass hoods do not have this.

However, in the openings on the bottom of the hood, there is insulation panels in there that are pretty gunked up. The car this hood was previously on must have had a bad exhaust leak. Is there a product anyone knows of that is specifically used for engine bay insulation? I'd like to re-do these areas, but want something that will be safe in the engine bay.

Thanks in advance!

Anybody?

That foam piece that sits under the hood? You can buy them off Ebay probably, there held on my plastic fasteners. When I wrecked and got a new hood I was too lazy to put it back on and I drove it around for months without it and nothing happened. I just got it painted two weeks ago and just put it on last nite lol, nothing happened to the paint.