Here's a couple pics of one. kinda old and cracked so it doesn't do much as a flap any longer. I'll need a couple new ones myself.

I know what you mean about the chop stand. I was so frustrated with my engine build I felt like rolling the whole car off the dock into the chuck to make a new artificial reef for the sharks. And I didn't do anywhere near what you are. Stripped the paint down to bare metal, but didn't do much underneath.