Did you notice how different the louvers are on a US car from it's Canadian cousin? Also the US cars have hidden wipers, the Canadian cars have a cowl piece behind the hood.
The seat covers are correct on the US built 2+2, same with the door handles. Interesting that the Bonneville in 67 had similar door handles as the Canadian built though.
Looks like a decent car. Fender emblems say 455, but should have 428 under the hood as a 455 was not produced till 1970. Also the trunk floor pan has been replaced and is not correct. May or may not be a big deal as there are no good repop trunk pans avail. It looks to be worth the money from what I can see, but there are some real things wrong with it and the remainder should be checked out!.
__________________
63 Grand Prix -needs restoration, 65 Catalina Ventura 4 speed - resto almost completed, 66 Catalina Convertible - at body shop