Popular products that we offer that work excellent are our Pipe mod for the stock pipe, DD y pipe, our inline fuel reduer, 2.5 degree timing key, and our clutch kit. But I think you have one already.
Typical F7's make 130-132 hp on 03 and 04 models. 05 models are more like 135, on my dyno anyway. With the above mentioned parts you can expect horsepower gains to bring you up to 147-148hp range and nice torque gains too from the pipe mod.
It's a pretty inexpensive kit too for all of the power you gain.