guess this heli
You are correct, it is a Hirobo MH-10, and it's well over 10 years old. It has a BK-117 fuselage on it. It's a .10-.15 size heli, and the engine is likely a CZ .15. Notice that the swashplate is under the maingear. You won't find new parts for these on any store shelves, but with luck, you might find someone with a small collection of parts they can't use. If you can't find a replacement part, you'll likely have to fabricate your own.
Oh, and about finding another body to fit the MH mechs? Don't count on it. You could recreate the missing stabilizer parts with balsa if necessary, just use the full-scale BK-117 as a guide. There are plenty of BK's in service around the world. Airliners.net has a good collection of pics. If you don't get it flying, just clean it up and hang it from your ceiling. If nothing else, it's a neat little heli to look at.