Do you have tools? Can you weld? Have you messed about with vehicles before?
What sort of condition is it in? Original and replacement parts are available to an extent, but you may have to order over the internet and ship to Canada. It could get pricey, but likely no worse than me buying bits for my Camaro in the USA and having them shipped to the UK.
You might be able to 'fix' many bits anyway. You may not need parts, e.g. you could patch up or even fabricate bits for the chassis. Body panels should be Birmabright, but they are all flat, so you could just get aluminium bits cut out to shape.
So it really depends on many many things.
If you aren't after a high fidelity restoration, you could look at putting a coil chassis under it. A Discovery 1/RRC (or likely even a Disco 2) could be candidates. The D1/RRC have certainly been done. Either stick with the 3.5 Rover V8, parts should be easy to get in the USA still and I daresay Canada. Or you could fit a latter 3.9, 4.0, 4.6 Rover V8 or even something like a Tdi without too much hassle.