Looking for 2 clamp on mufflers for 4 1/2" tailpipes for Stellings headers. Have manual switching Gaffrigs where when muffler is on water comes out the bottom. These do not quiet boat whatsoever. Tail pipe has signature Stellings 90 degree water separater tube (water and exhaust separate). What will help noise...sure to get a ticket. Was thinking ggb, gibson, or Zoomers...any suggestions?