RE: remove muffler and use resonator?
As far as sound, that would be loud as hell[sm=badbadbad.gif]. I have the 4.7 and my tips are my mufflers with my catback. Before i put the tips on I fired up the engine...loud as hell...cant imagine how that would sound on a hemi. i set off car alarms as it is. you'll probably get the same performance gains as you would spending $500 on a catback, so if you like it loud go for it. and if you dont like it, you only spent 25-30 bucks on a piece of pipe.