mileage on a 1987 KZ1000P

Hi all-
I was looking at a 1987 KZ1000P.
It rides pretty nice and looks good.
It has, however, about 65K miles on it.
What is the life expectancy on these bikes?
I can get the bike for about $1000. In your wise opinions, would I be throwing my money away.
My current bike is an '80 with 21k miles and runs like a champ.
Thoughts?

in my opinion go for it, my neighbor has a 1973 z1 900 with 97,000 miles on the origanol motor and it still runs pretty good.