Thanks for the tips. I definitely would spend with a U.S seller as long as the price is right. And, it is good to know that I can improvise on the case gaskets if I need to.
I basically have this bike tore completely down and need to get it running again. It needs a full carb kit for sure. The fuel petcock leaks too, so I'll need address that. And, I need to replace piston and rings with possibly a bore. Not sure yet. This thing hasn't been run since about 1989 and has about 3K miles on it.