If it's an 89 it's more than likely past 100,000 by now. Mine says like 80k, I think it is actually 180k. There's no error in writing down the mileage as 97k because that's what the odometer states anyways.
If you really must know, you can run the VIN in carfax. The mileage has to be reported at each transfer of ownership. So if you see that the car was sold in 1996 with 10,000 indicated miles or in 1994 with 80,000 indicated miles, you can safely assume it is past 100,000 miles.
If you really must know, you can run the VIN in carfax. The mileage has to be reported at each transfer of ownership. So if you see that the car was sold in 1996 with 10,000 indicated miles or in 1994 with 80,000 indicated miles, you can safely assume it is past 100,000 miles.