Thinking of buying a 87 GN with 100,000 miles on the clock. The body and interior are virtually flawless but the engine is somewhat clean. I'm into Chevelles and don't know too much about these cars except my dad had a nonturbo 86 Regal which he bought new. Is there something that I should look into that may give me problems? And what price range that I should be paying? Thanks in advance!