Inspection is pretty easy. Most inspectors have a "if you can ride it there it will pass" attitude.
1.Does not have to have blinkers must work if they are present
2.Only one mirror required
3.Must have a horn. Does not have to be electrical. I threw a sqweaky kids bicycle horn from REI on it for the inspection, removed promptly after.
Go to an independently owned "garage" and they wont give a rats *ss about any of the other stuff.
Yeah I am pretty sure there i no restrictions on exhaust.