I would say screw replacing it, not worth it. They all disinegrate. I would put an old sheet over the engine bay (so as to prevent the junk from falling down in there) and scrape that bullcrap off as best as you can and then clean the underside of the hood off with cleaner and leave it. Not worth replacing the crummy (and I mean crummy) foam insulation. It's junk....it doesn't help the hood paint from being corrupted and it doesn't do anything to keep an otherwise well running engine from being more isolated audibly from the cabin...forget about...get rid of it and never look back...that's what I did......