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!