Hey sorry I am a noob in the world of euro. I typically drive a duramax powered Yukon XL 2500 or Sierra 3500HD Dually.

I picked up this C5 Avant and want to give it a new exhaust. Nothing to pricey but am stumped online not many videos of 2.8's. I was going to go with magnaflow, flowmaster, or OBX. My knowledge of gas exhaust systems is limited, what is a good budget or universal exhaust set up?