Here are some helpful Part Numbers from Mugen
Honda CR-X Si EF
Mugen 18000-XE4-K4S0
Mugen 18000-XE5-K3S0
Honda Civic Si EF
Mugen 18000-XE5-K4S0
Mugen 18000-XE5-K3S0
Acura Integra 3dr Vtec DA
18000-KF0-K1S0
Mugen Power
Mugen Sports Exhaust System Aero Line Silencer
Honda Civic EF
Honda CRX
Acura Integra DA
JDM