I have both US and ozzie licenses...did the conversion thingie you're trying to do. Be prepared to fork out a lot of money. Depending on which FAA office you talk to. You may have to do up to 20 hours of multi time to convert because you have to meet the FAR 61 hour requirements. These are extensive and chances are you've done most of it but probably not all. I'm not sure you'll be able to convert that instructor's rating....it's highly unlikely though. On top of that work here isn't too crash hot although for an instructor job you should find one of those pretty easily. Sorry to be of little encouragement, but I'll give you more detailed info if you want.