In a distant future, when I will be able to weld very thin aluminium tubing, most definitely.
Untill then, this has to make do. There are no "pusher" mufflers availlable for this engine, and the only other possibility is pointing it upwards because rotating it 180 degrees it interferes with the propdisc. And vertical makes it look like the smokestack of a steamroller...

As long as the plane is flying, it remains completely oilfree in this configuration, and the engine seemed not to mind when it was running in the tunnel (where airvelocity is near equal to pitchspeed.