Ravin 33
I have the 77 series dual-in/dual-out on the Expedition. I'm the kind of guy who thinks glass-packs sound great, but this Ravin muffler is way too loud. Plus, there is an annoying drone right at 2000 rpms. A single-in/(1 or 2)-out might be better, but I'd seriously reconsider the 33 series as it is supposed to be the loudest one.
I've got the Ravin Z55 on mine, and love the exhaust. The Z33 is suppose to be the loudest, so make sure that's what you want before you get it. The Z55 is not too loud, not too quiet. Nice rumble at idle and you can definetly hear it when you romp on it. Good luck with you decision.


