I'm assuming you mean skyline when you say r32 and not the all-wheel drive golf.
I had a roommate a few years ago that helped a guy that imported japanese gray market cars like these into the US and every single one of them was an utter nightmare to look at in depth. Yeah, it's cool to have a JDM as **** car and all (in fact, I contemplated buying an r33). But most commercially available have been cut into pieces and had the drivetrain separated from the vehicle just to get into the borders and then they're typically put back together by the cheapest and shadiest of shade tree operations, the amount of just unsafe and completely broken things are pretty astounding. A lot of the cars ran terrible, the interiors were effectively a seat or two seats bolted directly to the metal and body parts were hung and "secured" with baling wire, hopes and dreams.
If you're willing to tackle what could be a multi year project as you go back over everything with a fine tooth comb, most of it is easily DIY (all if you can figure out tuning the electronic systems and have a robust enough garage and tools to do the work), but good luck ever finding even the simplest of replacement parts that don't have a JDM bro-tax tacked on locally, if they're available without importing from japan at all.
So I guess to directly answer what you're asking, no, there's nothing you couldn't do with the right tools and information (which is all over the web). But the labor is the simple part when parts are difficult to attain at all here in the US. And that's what killed the dream for me; at the time I was driving all over and I didn't ever want to be stuck in a strange town because a belt or some other easy to replace piece broke that no one within a 200 mile area had available and that feels like a big risk with skylines before the current model.
