Johnny,
Since you haven't had any other reply, the answer is . . . . . . . . . . nobody knows. (sorry) If you check out the threads on this forum, you will see that quality is a subjective thing.
My advice (worth the $0.02 it costs) is, open up the crankcase, look for sand, feel the cylinder wall if you can. Start it, if it runs ok, (fairly smooth) you have a fair chance. It still is a crap shoot though, some problems don't appear until it has been run for a while. Timing gear fractures, camshaft breakage, etc., etc., can still happen, but can't be seen before hand. Get the Utterpower.com CD and study it prior to purchase, you will learn a lot. Best of luck,
Ray