Originally Posted by m4a1mustang

There have only been a few times where I could feel a noticable difference over the bumps with the 5.0 vs. my 370. The road would have to be really bad... so bad that you wouldn't be driving fast on it in any car.

The difference really isn't that big.

Like I've said a few times before, not all IRS is created equal. Ever compare the Z to the Cayman S? There's quite a big difference in how the two cars perform over uneven surfaces.