My friend Garrett is doing the paint work on my car. I regret spray painting the engine bay black. It collected too much dust (especially before I installed a splitter under the engine bay) and was a pain to keep clean. So he stripped by engine bay down to bare metal. He also welded shut some of the bolt/clip holes. I didn't go crazy and have an entirely shaved bay, I just had him get rid of the cheese grater look in a few spots.
Still a work in progress, I'll upload pics as it continues.
I had cut the underside of my hood to clear the throttle body and intake pipe on the ls2 motor. It didn't look very good. Garrett was able to redo this area by stamp his own low profile piece of aluminum and welding it back in. Now it should clear and look good.