How much would it cost, and what would I have to do to make a 1991 r32 skyline street legal?

Thanks

 

And I don't mean moving to Japan or other privileged RHD countries. There's a private company in California called MotoRex. They are the official importers of Nissan Skyline GT-Rs (R32, R33, R34) into the U.S. They do all the paperwork and modifications to make it meet U.S. DOT/EPA standards.

Checkout http://www.skylinegtr.com

It will be difficult, but try to control your drooling when you look at the site.