Mustang with GT500 mufflers / pypes exhaust

Used to have Pypes Stret pros on this car. The drone was outrageous so I went to stock mufflers. Got them off ebay for $25. Not as loud but the drone is almost non exsistant.
Still get some rattles here and there.
This video was uploaded from an Android phone.

[@jcarolan75]

Sounds good - I had the Flowmasters on my car for awhile - great sound, outside the car, but too much on the highway like you experienced.
For the rattles, check the muffler mounting hangers and make sure that they aren't touching the crash bar on the back of the car.