The material is PETG. Going to put the coldest thermostat in (160). Maybe make shields for the intake as well. Might even make a brace to help it hold up the carb. As the intake gets hot, it may sag. Plenty of challenges. Still far cheaper than making a cast aluminum intake.
Was wondering if there is a good barrier to apply to outside of intake for heat. Even a spray foam of sorts. And then fire retardant paint over the foam. Or maybe it will be a non issue.