2004 Ford F150 XLT Triton 4.6 V8 true dual exhuast using 40 series Flowmasters

Please comment what you think 2004 Ford F150 4.6 V8 with a true(the two pipes never connect)dual exhaust. The mufflers are Flowmaster 40 Series going back to 3 1/2 inch tips. Be sure to check out my new fly by video of this truck and the newest video at http://www.youtube.com/watch?v=E4Zv5uAvyiQ