Should I buy this 16v?

I'm thinking about buying a 16v, and I've located one that's about 200 miles away. It's a silver 1986, 5spd, euro lights, and dtm exhuast. It has 140k miles on it. The owner has told me that it doesn't idle well in the winter, but once it warms up it runs fine. What could this be? Is it a relatively minor problem? What should I look for if and when I test-drive it? Thanks!

-James

P.S. The asking price is 6k.