The Mopar branded exhaust is the Corsa sport for the SRT's. They just won the bid to brand the GTX type exhaust tips and supply them to Dodge. Borla won the bid for the R/T's.
You can safely put in the exhaust without throwing any codes. Also you can add the CAI or drop in a K&N air cleaner without flashing the ECM. I've done it and no codes.
Seeing that Corsa is the builder and supplier for the Mopar SRT systems, I can't see, even with the extreme system, that there would be any issues. You might get some horror stories from friends or the odd service manager, but I wouldn't lose sleep over it.
If you want to be 100% sure, you could go with the Mopar ( knowing it's a Corsa anyway), and have the dealership install it. then there would be 0 issues.
The CAI looks pretty cool. Not sure it's $400 cool though? Some might disagree, I went with the K&N drop in filter. From everything I've read, the SRT airbox breathes pretty good. The real secret might be in putting in some "High flow" Cats along with the Air filter and exhaust mods.
This is where you might have to look at a tuner if you go that far. The best exhaust is relative to whatever your taste is. What might sound sweet to me, might sound like trash to you.
I can tell you that without a doubt, the best clip that's as true to the real sound of an exhaust video clip is the Corsa video with the black SRT that Corsa uses.
To me, i thought it might be a trick to make it sound better for sales. I was wrong! That's exactly how it sounds on my car. Had the wife take off with it so I could see. Sure enough, it's the same. I was grinning from ear to ear. You'll have to deceide on your own if that's what you'd like. Personal taste.