I did some comparing between the Command and Courage service manuals and found some interesting differences between the two V-twins. Obviously they have cosmetic differences between the blower housings, shrouding and air cleaner assemblies. #1 would be the Courage twins don't have hydraulic lash adjusters (Chevy small block lifters) like the Commands do. The Courage series uses simple lock-nut lash adjusters that would require periodic adjustment and flat tappets. That's the same setup that many high end OHVs have used for years. #2 the Courage V-twin blocks look a tad lighter in construction than the Command. Smoother, less ribs and possibly gusseting. #3 the intake manifold and crank case breather assembly are different and look lesser grade on the Courage. Not to say the Courage twin is a bad engine, they probably will still outlast the equipment they're bolted to. FWIW, what sparked my interest is I'm going from a Command 20 equipped Cub 2544 to a Courage 20 equipped Z-Force 44. Just thought I'd share.
Joel
Joel