I have Two Late Model Dirt cars that I have used Orange RTV for years and have to pry the headers off when removing them. I don't use a gasket and just a small amount of RTV. What happens with a gasket is you give the system a weak link that can blow out. Like the thicker gaskets. If you don't retorque them all the time they flex and blow out. With just a thin layer of RTV you just fill the small imperfections in the matting surfaces and leave no place for the exhaust to blow out. All my toys have RTV and no gaskets and I have talked may people into being believers