When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
They both sound good imo, but I love glasspacks (if done correctly). With a v8 there really isn't a bad choice. Depends on if you want volume, tone, or both.
I have a fm 40 on my 5.9 and its still in pretty good condition after 5 years of mud and Ohio winters. Has a nice rumble at idle but seems to cackle a little at high rpms.
I know this is s little off the subject but I've recently installed (partially) a flowtech Raptor. I have not yet connected the exit pipe to the muffler due to f'ed up hangers sold to me by an auto parts store. (Will exit before rear pasenger tire) But Imo it sounds good a little loud but good.