Buying cars from Quebec?

Do I need a safety to get a 10 day?? What if the car has never been on the road before, say a JDM car??

Like I want to roll up, buy car, go to DMV, transfer into my name and get temp plate, then drive back to Ontario, safety, e-test and retransfer into my name. This would work??

I’m worried about getting a temp plate with just an Ontario license, they don’t have 10 days here anymore, you have to buy a plate and get a temp sticker.