WTB: Toyota or Lexus OEM Resonator

I need a used resonator from either a Lexus luxury car like the LS 430 or any recent Toyota sedan. That actual dimensions should be 4 inches in diameter and 36 inches in length. I've been told that Lexus and Toyota resonators are very quiet. I am trying to make my exhaust note more mellow by putting in a longer resonator. I drive a 1997 Honda Prelude. If you guys have one in that size similar to what I just described then please email me at [email protected]