What if 2015 IRS can be retrofit into a S197?

[kdanner]

It'll end up like the current Camaro. You'll wait for the aftermarket to produce things like a 9" center section and halfshafts that will take the abuse, and they will be $$$. Even then, an IRS won't plant the tires at a dragstrip or even on the street like a solid rear axle will, no way to use the torque to work the suspension like a solid rear axle car can.