Like new, run on test stand and then put away properly with lots of oil. This engine is mint. I'm going smaller / electric so might as well sell it!

Yes the muffler is included. I think I bought the engine in 2015, maybe? But regardless it’s not been flown or mounted in an airframe, only run-in and tuned on a test stand and then put away properly with lots of oil. It has less than an hour of time on it.

Thanks-