When my motor was being rebuilt, my mechanic removed the resonator box and filled in the gap so the airflow was smooth as well as desnokled the car. It sounds great along with the NHP sport muffler which I updated to. It's hard NOT to rev the car ....
Many who have heard it love the sound especially when driving through underpasses. I don't know what the car felt like before as I bought the car with a blown motor (PO overfilled crank with 4 extra litres of oil), but as said before ... hard not to blip the throttle. People keep giving me thumbs up ...