Ours was less strict than yours. We didn't do emissions or noise. We are strict amount minor stuff like flat mirrors, seat belts, dash illumination, intrusion bars, fluid changes.
Most mods they did not care about and I can tell you that the stuff you can't readily check for was generally not done.
But like any business, there are way around inspections... with the right people and the right amount of money.
After May however... I don't want to think about it.
T.