You'll have to pass smog, pass safety inspections, and get it passed the Department of Transportation. Here, just read
this from SupraCentral.
The only "JDM"/RHD cars I've ever seen are an R32 and based on what the owner told me(and what everyone else agrees on), it's not worth the hassle unless you've got the time and money to pop for it.
With that said, go nuts and good luck!
edit: brain fart and forgotten english...