I think I will probably just stick with my Loudmouth with chambered muffler and save that $700 for other mods instead of going with a GMMG. I may change my mind if headers makes my LM too loud though (going with Pacesetter LT's now instead of mids).

 

If headers make you LM w/the same type of muffler as the GMMG too loud it'll make the GMMG too loud.

If it gets too loud put a Pro Flo Twister or Moroso Spiralflow muffler in the I instead of the chambered stick. I have a twister in the I of my Borla w/ no restictor plates and cats that decided to blow themsleves out, mac headers and it is more quiet than my 4" mufflex w/a spintech was before the cats blew themsleves out. This would still save you $700 for other mods.

 

Thanks for the tip, I will remember that if my exhaust gets too loud with headers.