Cat back exhaust systems for '03 Avalanche.
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Former Vendor
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From: Lubbock, Texas
The Magnaflow I put on my '03 2500HD is great, and I've heard numerous Magnaflow systems on gas-powered trucks. The quality and performance is great, and the sound is equally good. 
Let us know if we can help. We keep the majority of the Magnaflow systems in stock.
Trevor
Texas Speed & Performance

Let us know if we can help. We keep the majority of the Magnaflow systems in stock.
Trevor
Texas Speed & Performance
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