Buying a Porsche 911 (930) Turbo (1975 to 1989)

Buying a 930 Turbo (coupe) from 1975 to 1989. I am a serious buyer and am not looking to flip, this has been a dream car for me for my entire life and I intend to keep it and drive it as much as I can. I am not very picky regarding colour and condition. I actually prefer a well-worn car with lots of miles as long as it is well-maintained and fully operational. Thanks!