Done a lowered vehicle inspection twice (in Salmon Arm). Definetly do your homework on who to bring it to. According to the rules, as long as no part of the vehicle is lower than the bottom of the rim. However, there is definetly a lot of difference in interpretation when it comes to inspectors. Apparently, even if a shop passes you, the DOT can still send you back for another one, in which they can pass you again, and DOT can send you back again. Again, like Dannyboy said, as long as it isn't ridiculous, you should be fine.
Take a look over the Gov't inspection sheet before you go in. Things like a rip in the drivers seat will cause a fail. As well as glass cracks, lights out, etc, etc.