Where (city/province) the car is registered ?
For Punjab/Sindh, generally there are 2 files of each vehicle. One file they give to owner (usually original one). And 2nd file they keep in their records (copies).
You can hire an agent and he can pull all details from excise records.
Because if the pending tokens are 37K, then it means it won’t have smart car and car still be running on passport book. It may have other complications too and can cost you more to transfer to your name now.
Don’t rush to buy such old vehicle unless you receive green signal from excise agent about its clean records and transfer fees/charges etc.
BTW, why 91 model Nissan? This is already out of market car.
Why not Corolla of early-mid 90s model with clean records, which are far more value-able and availability of parts are still available.