Engine bay will be fine as long as you dont do that again. But as far as I know no one has a matte clear that actually holds up to UV rays yet. Why are you doing a matte color? I was originally going to do gloss grey in my car, but I went with the silver because I already had it laying around.

Oh and my water inlet at the intake manifold leaks. So I have to now replace the intake manifold gasket. I fucking hate this motor.