the length is ok, but as the inner fenders and radiator support are completely different on US vs Canadian cars, the fender mounting holes don't line up at all.
I can vouch for that! I have a '70 Cat as well as a few other '70's as well, and as seventy2plus2 said, rad cradle and inner skirts are totally different! If you could get it cheap and use it for patch panels or replace the mounting structure if possible?