What is the point of this trade? More power? Better handling? Do you prefer the look of a camaro over our Z? Just want to spend money?
If power is the motivating factor, boost the Z. If it's power and handling, add coilovers... I don't know if it'll be as good/better/worse, it's just an idea. If you are thinking about getting a camaro to begin with, you will probably get it.