If I may quote Shawn B from memory:
"Work for the post office, and you can drive JDM 8hrs a day"
I'm sure I speak for the community here when I say that the time, cost, and modification required to simply move which side your steering wheel is on simply isn't worth it. If you really have the disposable cash to make this happen, even on a B13, by all means go for it. However, there really is no gain from doing it, and I'm sure anyone else here could show you better ways to spend it.