I've found the inspections on our trucks are very easy and quick. If one place gives you fits, drive to the next one. I doubt you'll have many problems getting it passed.
I don't know all the "legalize" regarding emmisions, but I've never had any problems with inspections here (I know I have a 2000). Once they know its a diesel, the inspection lasts about 5 mins. Once, they didn't even drive it....just slapped the sticker on it.