Hi, I recently bought a '95 n/a 300zx and the previous owner installed a magnaflow catback dual exhaust system. He didn't have resonators so i had them installed to hopefully quiet the drone. It helped, but between 2000 and 2500 rpm the loud hum makes it impossible to live with. It sucks 'cause I really like the sound (at any other speed) and the look. I'm selling it on craigslist for 255 but if someone has any idea how to quiet it inside, i'll keep it. Otherwise, it's OEM exhaust time Thanks for any suggestions.