Well I'm slammed on an 03 Cobra IRS with the stock shocks and they handle and drive just fine. I've got GT struts on the front though. My buddy is just as low with his 04 Cobra on the stock struts and shocks (100K+ miles too) and it drives and rides just fine.
Sold - Black 2000 Mustang GT, gone but definitely not forgotten
- Silver 2007 Corvette
Current - DHG 2001 Bullitt