ordered a set of diamondback blackwall smoothies from Darryl at wheel master classics. Nice guy to talk to and knows his cars by A body, G body etc. I'd rather order from someone representing diamondback in Canada. That way all duties and brokerages are taken care of. No surprises when they show up at your door.
Diamondback does have a source for Canadian buyers - they advertise in "Old Cars Weekly" here in Ontario. :TU: