Nosser

I have always been a fan of the first-gen Zs and I will be attending an auction soon where a 71 will be up for sale. Given the auction environment, I will be somewhat limited in how completely I can check out the car, and I was hoping that I could pick the brain of the collective consciousness here as to what to look for as far as problem areas go. Of course I am sure that rust is an issue on these cars, but where are the most likely areas to look? Are there any other issues which are common and easily recognizeable. Are there any serious issues which would make a car that looked like a good buy a potential money pit? Thanks in advance for any and all input you all can provide.