Why don't you get a normal exhaust tip, an oxy-acetylene torch and a bucket of (used)oil and black oxide coat the tip. It's durable and will be turn out a matte black. You can probably have the guy doing your muffler install do it right there since he should have everything except the used oil on hand. Oh, and by the way, I think that muffler is awesome. I was actually looking at it too a few weeks ago, since mine is about due for one. Let's see how it turns out!!