DISCLAIMER: I haven't brought a truck over the Canadian border, but have purchased out of state. (MO)
I wouldn't expect there to be anything different about an out of state purchase, other than duty/tax being collected at the border. If you are lucky they will apply use tax and not take it at the border, and if that is the case you will be required to file for the use tax on your income taxes.
In order to register out of state vehicles most states require you get a certified weight certificate. You should be able to find a truck stop in your area that will be able to do that.
Other than that, it's mostly waiting for the DMV to process it. I was able to register my '46 and it isn't required to pass smog. Just as expected. Not sure if Covid will have any impact on crossing the border or not, but you might be able to check with customs to find out.
One note on trucks. You can register them as non-commercial, but legally you're not allowed to haul anything in the bed. In order to legally haul ANYTHING you must have a commercial license. That's pretty standard for trucks however.
