[Coley]

If you get a chance, talk with a paralegal about getting the seller and yourself to sign an affidavit as to the ownership being 'free and clear'.
I bought a used camper/trailer from Alberta and brought it out to B.C.
It didn't have any official 'registration or ownership' so I made a quick trip to the local paralegal (or may have simply been a local civil lawyer?) and paid $50 and got a signed document guaranteeing the ownership was free and clear.
I submitted that locally to our licensing and registration folks and ba-da-bing.....on the road.
Maybe talk to the 'border guys' before the car gets there to warm up your methods.

At the end of they day, you'll get your car for sure....might just be a couple of extra paper trail steps to make to expedite it through.

Keep us posted tho'...and best of luck.

All good
Coley