Question for PA folks: Thru-the-fender exhaust legal?

I get into H-Burg quite a bit..typically driving a truck though so parking downtown is my issue. I was going through a tag service, and your right, they are overly picky. I was going for the classic plate so I could get a reduced rate on insurance since we only drive the car a couple hundred miles a year. My agent at the time told me I couldn't get lower cost insurance on a vehicle with a regular tag. Turned out I switched insurance agents, not companies, and all of a sudden I could get the lower cost insurance with a regular tag. I had to sign a paper stating I had other vehicle to drive on a regular basis. Really all they had to do was look at what I have insured and they could see I had other vehicles insured for daily use.