Buyers guide for GPZ 900R

[glazuna]

Hello everyone!
I'm a long time fan of the great big GPZ.
For the past few years I've been riding my smaller 500S and it seems to me it's time to upgrade.

I have an A1 1984 900R close by with supposedly 100.000km on the clock. Now I don't know if this is too much already and haven't really seen the bike in person yet, just on photos on which it looks nice. But the question is; what do i need to look on when i get to see the bike? What are the key spots to make the decision wether to walk away or take the deal?
I'd think that listening to how the engine runs and how it rides is the key here but what about the delicate anti-dive systems and problematic starter clutches and such? How do you diagnose possible incomming catasrophe?

Thank you for you help.