lear31A

Looks good! Nice and neat. Maybe some Red Hi-temp engine paint ( auto store) would make the muffler blend in. If you decide to paint it just make sure to run the engine, get the muffler good and hot to "bake" the paint. It will then be fuel proof. You won't need to paint he whole muffler. Just the area that's exposed.
Worth a thought for such an awesome plane