I have an 09 also and this is what I did in the order I think gives the most feel at power and or speed.
Sliding Weights from Hunterworks, I used 18 gr ones. Stock are 20 gr. These gave little more down low with more top end. I love these things.
MSD Box with the tunes from Hunterworks. This gained me more low end.
Muzzy Duals. These helped a little, it gets to speed faster, but overall the top two would be the best bang for your buck. THe Muzzy I love still, a little pricy, but sounds great.
2009 Sport - Bought 12/11/09
Hunterworks OD Weights and Sliders