Wow! I NEVER expected to see this; a Canadian built Polara 500 with push buttons! I expected that the console shift would have been standard in the 500. My Polara was an earlier Sport Package car, which gave it bucket seats and console. My car also came with push buttons and plain console top. I changed it over to console shifter early on. There is another '64 Polara 2-door hardtop in my area that is an early Sport Package car. It has bucket seats and the shifter in the console but none of the specific 500 trim, like yours has. So, from this, I had already surmised the console shifter was a separate option on the Sport Package. I always assumed the Canadian Polara 500's had the console shifter as standard equipment, like the U.S. version. Your car has certainly proved me wrong. This would be a very uncommon build, and could be one-of-one remaining. I have never seen another. Congratulations on your inheritance.