I would #1 have a knowledgable member go take a look at it for you and/or #2 have the Z taken to Specialty Z. Burbank is close to Woodland hills so it shouldnt be too much to ask of the seller. Of course you'd pay for the diagnostic but that comes with the territory. If it checks out mechanically i'd make plans to fly out and see/drive it. As zgene4 said above, prepare yourself ahead of time to walk away. Dont buy a one way ticket expecting to drive it home.