How the F do you remove a dead possum from your engine bay?
The only thing that comes to mind for me is really messy. A sawz-all, maybe an old broom handle, and a hose?
I know once critters are dead a little while they tend to "balloon up"....
Reminds me of the story of a buddy of mine with a pet ferret. He used to let the little guy roam the house - and he noticed he hadn't seen him in a few days and figured he snuck outside. They eventually found him while trying to track down a "funny smell".... his shop vac in the basement, on the legs of the vac, had these spots where you could mount all the attachments. There were some straight spare hose extensions, mounted vertically... the ferret climbed down into a tube and, being nose-first... got stuck. When they pulled the tube off the mount spot... it wasn't a ferret that fell out but a giant pile of goo...