Porsche911T

Is there any problems with reliability? I found one with 76k miles on it, and all documents for 15900 and a 1993. It's realy nice, I just don't know how reliable they are. I think they have 230 horsepower? I've been in new cougars, they have 170 horspower and that should keep me happy even though it's not jaw dropping, but 230 should realy be nice. How long should a 968 with all documents, never raced (can't realy prove that) last?