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

For the record, I just looked up PA classic/antique code - it actually DOESN'T have a mileage or night-time restriction. It just says it can't be usd comercially, and can only be driven for TRANSPORTATION no more than once per week. However, you can drive to shows and events every day if you want to. So basically, you can drive it for fun whenever you want, and nobody will know the difference.