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Are you going to chuck the whole engine in the acid to get that matching pink shade of the "cleaned up" chest cover or clean the pink off the cover
Nearest you will probably get in a matt heat resistant is something like Thermacure's Mojave Red, looks a bit like red oxide primer but will take the heat, I've used it on Flame lickers and its not come off. Their Black will do for the doors.https://thermacure.co.uk/products/If you are feeling artistic than get a can of Ivory too and mix colours to pick out individual brick.