Thinking of buying a 1991 Z34 with 190kms any tell me what to look for

have you drove it? the trans might be crap. the motor could have problems. the best way to tell is when you put the car into drive if the car takes a while to engage into gear then no its not. if the car pulsates while in drive then no. if there is any hesitation when you take off or try and turn the wheel at slow speed or hear a croaning sound when you turn then no. theres alot of things that could be bad or good anout the car. you have to give details about the car. but with a 190k im a little worried about the front end being bad or the cv's are loose and could snap. alot of things.!!!!!! but then there are good things too. but post some stuff ont the car if you can