Well, appears to be a pretty decent cub set up. I would check the stroke, squish, compression, and ask for a leak down. Most of the parts for a strong cub set up are there and I would imagine that if it's in good running order it is worth snatching up.
That fuel system looks weak though. It appears to be running on just the stock petcock with the T fitting to the carbs. Whether it's gas or alky, it will definitely want more then that.