Don't wastr your money
If this is American Thunder it must be left over from the liw performance 1980's. Thid exhsust is quieter than the factor pipes...what a waste. I hope it rusts out fast so I have an excuse to throw it away, as for now I'm low on funds from this poir choice. Flowmaster should be embarrased I would never describe this as an aggressive sounding system. DO NOT WASTE YOUR MONEY!
My 2500 Dodge Ram needed exhaust, the challenge was every site was showing systems for the 1500 Ram which didn't seem right. Joe at extension 7126 spent the time to call several manufacturers to find out which one even made a system for the 2500 but also one that met my needs of increasing towing performance without drone. The Gibson went on fast and sounds great. Mileage and power are both up. Thank you again Joe!