It turned out great. I recently painted some of my engine bay because of rust. I put a grounding kit like 6 months ago and didn't put primer. So the metal started to rust. I cleaned up the metal put the grounding kit back and put primer and painted it. It seems to be going great. The car doesn't try to stall anymore. Not really stall but when I'm standing at a stop the rpms go below 650 to 500 or in one instance 300rpm.
I had a black mazda for a while. I would wash, wax, and buff that car every couple of weeks until I finally gave up. It was filthy when I traded it in for the cruiser.