I would take this to a car forum for a better knowledge base possible.
But I do know that they halted the legal importation of the R34 platform a few years ago for the states after that one company was found cheating the system and screwing people over.
I'm not sure if you can still import new to the states R34/R33/R32 s but you can still drive legally converted ones.
As for Canada, I have no idea what your guy's rules are, but i would imagine that they are legal, I think I remember hearing something about them still being legit there.
one question though and maybe it's different in Canada, but you have 120K to spend on a car right now?? (rough going price last time I legitimately check for an R34), I found R32's as low as the 20's but R34's were slim picking under 100K if I remember right.
if you get one, I'll be jealous.