Update:
This is before taking off this piece, it's pretty warped.
Here's behind it:
I cleaned up the back side and here's what it looks like:
The areas near the opening that got too hot did warp and discolor, but not as much as the closed area.
Otto, here is the control arm pictures. I was temped to cut the corner off because it's BARELY over the control arm, but then I would have a harder time attaching another piece to this one. I'm thinking I'll just tuck the next piece above the front piece and zip it together. I do want to leave some areas open for air to exit the engine bay.
Okay, back to playing!