Yes, I actually bought it with a bunch of other small mods for mine. No way in hell you'll notice a difference. I wouldn't bother. Save the $50 toward a modded LS2 TB if you really want to start with better breathing. I think I saw one on aacorvette.com. The LS2 TB is redesigned and looks like it doesn't take in any of the "air turbulance."
The "velocity stack" was the very first mod that I did to my car. Did I notice any power gains? Not really but, the car did feel a lot smoother. Remember now, other than the "stack", the car was bone stock. So, yes, I felt a difference. More power........Hmmmmmmm?: Smoother........yes!:usa: