Here is a pic of the Flying Horse/ RAW engine by a representative of the factory, from another thread, that states this is what a "legal" EPA sticker looks like. I really didnt pay much attention to the sticker as I did the quality of the casting of the engine. The first thing I noticed was the misformed and bent fins, then the hole in the cylinder near the intake, from improper casting. I told the Rep. that if this was represenative of an EPA approved RAW engine, I would rather have an unapproved engine.