Sounds to me like he's complaining about it being TOO firm already...as in firmer than the RS Camaro he references. High perf shocks will firm it up even more.
Not convinced that's what the original poster is seeking.
FireMedic...please clarify. What the heck do you mean by "bouncy"? Floating and drifting up and down while running down the road, like the shocks are not dampening the up & down motion? Or do you mean your teeth rattle from each bump in the road like the suspension is not compressing and it's just sending all impacts right on through to your random chick's jigglers?