That's awesome! I personally used to work for magnaflow and can attest to really high quality materials. These mufflers are practically indestructible and will sound great for years to come.
A common mistake people make is sizing the mufflers too small making the exhaust sound too loud. After they are first installed the mufflers will sound perfect. Then after about a week of driving the sound changes and gets a little louder.
The material used inside the mufflers reacts to heat and gets hard, which is great for durability but they get louder. So get your magnaflows a size smaller or a size longer than you think you need to get a perfect sound.
Oh, and PM me a part number for pricing. I guarantee I can beat anyone
Marcus