Spoke with him a moment ago. He said the chances of him remembering the car, and who he sold it to are almost non-existent. He does not have records of that stuff anymore. He said he is a good source for blocks, heads, cranks, and stock brackets for those stock parts you can't find. I asked him was it safe to say he has retired for Buicks and his answer was Yes. As for finding your car I would suggest you contact the Secretary of State and the will have the cars and VINs you have had registered in Illinois. A police department may assist you in that too. From there, you can Autocheck(Carfax) and google the VIN which should lead you very close to its location. Now 97 was a while ago so I will like to see what condition its in now. Let me know if you need anymore help and best of luck in your search!!