i have an OBX twin loop on my del sol vtec i have a dc header and the its just 2 3/4 piping from there back with a resonator but... its not much of a resonator. it sounds pretty good. its loud when the motor is pulling but it is very quiet during regular driving or idling. it has a pretty good tone. it looks good too. doesnt really sound like a subi to me, but its deep and not ricey fosho.