Outer Limits 4x4 Board

Been day dreaming at the Brian Crower gear for the tb48 engine. Has anyone used one of there stage 2 or 3 cams on a tb48 engine. Thinking about getting a stage 2 cam, a bit more power would always be nice. Really don't want to loose my low end response and power. With the current tune i'm getting just over 200bhp at the wheels and its a very responsive. What sort of improvement could I expect.
I'm intrested first hand experiance of these cams on a tb48 engine.
Thanks Feral