When I got my Mach 1 in 1990, one of the first things I did, was to take it to my local muffler shop for a new exhaust system. All I told them was to put whatever kind of generic "turbo" mufflers that they had in stock on, instead of a stock replacement mufflers. They bent up a whole new dual exhaust system ( with "H" crossover ), from scratch. Before they welded the whole system on, I asked them to let me coat the components. I spray canned all of the pipes and the two mufflers with VHT high heat black coating externally, then after it was dry, they put it all on and sealed me up. That shop has since closed, property sold, and apartments built there. The cool thing is, that I STILL am running the same exhaust system today! I don't know who made the mufflers, but they idle with a nice deep rumble, yet, on the highway, they're not loud, something I'm appreciative of on long trips or when I want to listen to some music. I recommend to anyone to paint their exhaust system. I have no rust issues even 25 years later. I suppose, since I do drive the car to work everyday, it's helped keep any moisture from forming long term and rusting the insides of the pipes....and years worth of carbon deposits couldn't hurt either. Today, the black paint has turned lighter, looks rather more like a Titanium grey with age, but totally clean.
I got the idea from when I worked for a man who owned a car collection...all the Italian cars he had ( Bizzarinis, a Maseratti, and Lamborghinis ) all had black painted, or coated, exhaust systems.
