Heat paint will work if u got a torch to heat up the ceramics so it turns hard, actully a lighter will cure the ceramics. Also, I learned a trick when doing exzaust's, if you use 1,200 degree heat paint on an exzaust, it will look nicer and last longer, don't use 500 deg engine paint, I learned the hard way, on my chevy, I used 1,200 deg aluminum colored paint, and then I put some Ford red 500 deg paint over, thinking the 1,200 would take the heat so the red wouldn't. Yesterday when we were taking my Chevy back from my grandparents, and got to my hill, which 90% of is like a 60 degree angle, we were taking it slow and the exzaust was getting hot because we wearn't going very fast, the passenger compartment was filling up with weird smelling blackish smoke, I thought there was a fire but, we kept going because we would have had a better chance of putting it out if it was at the house, so we got passed the hill and a minuite or 2 after doing 30, smoke cleared, got home and, the exzaust was compleatly char black, it wasn't on fire but, the paint was/ is sorta crispy but, some places I cleaned, the silver shows through.