My 89 with 217k on it is stock, the only thing that I have replaced in the 1.5 years and 5k miles is the distributer. Recently, it has started to stutter a little once in a while, usually when I get on the trottle. Today, it started to do it so bad that it stalled several times. If I start it and apply the trottle real easily, it won't, but if you have to get on it, like pull out in traffic, it stalls. Any ideas? Fuel pump?