Odd, because most of my friends (some who aren't car people and some that are) noted how unplanted the rear end of the car seemed under any sort of power through less than perfect roads. They wouldn't be in the market for a sports/muscle car anyway but they still noticed. I believe Ford left a lot of room in the S550 IRS as they did with the 03-04 Cobras. They probably missed where it should be in terms of NVH for the enthusiast, but to people with the V6, EB, and a few 5.0s the ride is perfect and they probably will never see wheel hop.
Performance pack should really include better bushings/subframes/halfshafts or whatever it takes to eliminate most or all wheelhop. Most people in this segment won't care about a little NVH considering many are going to upgrade exhausts, lower the cars etc.
I went from my 11 Shelby to an 06 Viper and even though its a different type of car, the IRS in the viper is amazing to drive on the streets compared to a SRA car. I have very high hopes that the GT350 takes on the IRS issues and makes a hell of a car.
How are those half-shafts holding up on the 15s so far!
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