Trying to find "DHK 552X"

Unfortunately my dad passed away recently and I'd like to find out what happened to his 1982 Toyota celica St. It was his favourite car and I'd love to find out if it's still out there somewhere. The vehicle enquiry service says it hasn't been taxed since 1997 so there's not much hope of it being alive anywhere but I'd still like to get any information I can. The registration is DHK 552X. Any information would be appreciated