You can't add them to a car that doesn't come with them because the vehicle is calibrated specifically with them by the manufacturer. There are multiple calibrations on the new Camaro - touring, sport, track, and snow & ice - that you select with a rocker switch. The switch also includes the calibration on the exhaust valve. Open almost all the time in Track, closed in Touring. MR is standard on a 1LE car, too. I am sure they are expensive to replace. The option was $1700 on my car.
On my car which already has MR, I can even buy a 1LE kit which is springs and sways, which also includes a calibration for the shocks to match what you get with the 1LE kit. I don't get the eLSD, but at least I can get the handling if I wanted. On the Corvette, you can actually buy a special "Rough Track" calibration from the dealer because they found trouble at high speed on certain tracks that had a poor road surface. There was even some talk about adding track specific calibrations, but I don't think that ever happened. As it is now, they are tuned on MRC and tested at Nurburgring, so they are pretty good from the factory!
My 2012 Camaro was a great car, but the ride was REALLY stiff. The MR suspension on my 2016 has solved this. The car eats up bumps like 72 Catalina, but if you put it hard into a turn, it tightens up the outside shocks while softening the inside, almost tipping you into it. It is pretty amazing technology. I know I am a biased GM employee, but the new Camaro is at least two generations ahead of the last one, and at least one ahead of its competition.
-Geoff