I love my Magnaflows. They are a little pricey but totally worth it.
check out performancepeddler.com cheapest prices period. I have bought all my magnaflow systems from there for all my vehicles

 

magnaflow is a good quality muffler, thats what id go for

 

what about cherry bombs, i was thinking of getting them on mine. is there even enough room to run true duals with glass packs?

 

Don't do the glass packs. Get yourself the cb extreme or something along those lines. You will not be disappointed. You can get them on ebay for around 57 dollars with free shipping. That's what I did.

 

I too have a 4.7 and am in the looks for some dually pipes. I have a flow master now but I want something a little louder but not crazy. I also only have one pipe now and I think I need to open up up some more air flow

 

I got cb eextreme si do for 55 shipped on ebay. Number 7427 muffler. Getting it installed when it arrives

 

i just got a maganflow 18" with 3" pipe, sounds deep and loud, but not to bad in the cab, sounds a lot better than the flowmaster 40 series i heard on a 2002 4.7l

 

You're gonna love that thing Blake. It's just like the advertisement says. "Disturbing the peace".

Did you get it from Racing parts direct?

 

It also depends on how loud you want it. I drive fairly long distances at times. I like a loud exhaust, but not in my ears for 3-4 hours....LOL

Magnaflow seems to be the best thing going for most folks. When I first got mine installed, I notice how mellow it sounded just cruising along. Give it a little push however, and it really wakes up. And the Magnaflow quality seems to top notch as well.

 

yep racing parts direct!