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If you want more flow get the 'Magnaflow" however when my 302 truck was stock with the stock cats and manafolds the short magnaflow was real quiet no volume at idle , If you want volume try the Chery Bomb Extreme, I got one cheap mufflers,
Jason is right. Both stock cats really muffler the exhaust alot.
If you want to be able to hear your exhaust and still have both cats your best bet is a short glasspack. A highflow cat would be better for helping increase the sound. You could just straight pipe it after the cats. That actually sounds fairly good.
I found it. Somewhere in the thread you had replied and somebody else's pictures were in your post. I really liked the way your system came out. What did it look like after the muffler?
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.