Very simple install. I had Eric G. from Ohio (Blackandmild96) install mine in his driveway while I put speakers in his sport tbird, last fall.
Did I mention it was about 30 degrees out when he did it? It took him about 30 minutes to get the old exhaust off, and he bolted on the new one no problems.
One thing I would recommend doing is deleting the muffler resonator, and if possible the third cat. That will liven up the sound of the exhaust.
When you put the system on, it will sound stock for a couple months until the mufflers age. I have the resonator deleted, and the mufflers have aged for about a year now, and the system sounds awesome. Never annoying or buzzy. It purrs pretty good when you get on it however.