I ordered a Magnaflow exhaust for my 2004 Corvette. It bolted right on with very little effort, using simple tools. I think I used three sockets and a wrench total? Finding a garage to lift the car was more challenging. It looks great, sounds great and more power was noted right away (I also had changed the OEM Air Cleaner to a Cold Air Intake). The exhaust came within four days and packaging was adequate. I was a bit disappointed that it only came with one Gasket. Shame on them.
American Thunder and HEMI
This system is pretty simple - no resonators means the growl comes into the car a bit more, but that's exactly what I wanted as I tried Corsa and have heard the Force II and it was a bit mellow sounding for my taste. If you want a good rumble when you step on the gas but still be able to live in the car while every-day driving, it works great! 2015 Charger so stock appearance remains, which is what I wanted, but some may want the look of new tips....