When I bought a Quebec car and registered it in Ontario, I did it like this: After agreeing to buy the car, I went to the Societe De L'Assurance Automobile de Quebec with the car owner to transfer ownership. I then told the agent that I wasn't registering the car in Quebec. She charged me $8 for a transit slip (Allowing me to drive the car for 3 days), but didn't chage me the tax on the vehicle's value. I then went to Ontario and had the car inspected and e-tested. Once I had a pass on both of those, I went to the MTO with the test results, my licence, the proof of sale and the papers from the Quebec Lisencing agency. They charged me the tax and gave me the lisence plates. Easy! Now, this was a while ago, but I don't imagine it has changed a lot. Take a look on the MTO page: http://www.mto.gov.on.ca/english/dan...e/rgoutcan.htm
As well as the SAAC page:http://www.saaq.gouv.qc.ca/en/vehicl...ion/index.html
Giving them a call will help too! Good luck Dave!