Next batch of mods for my 07 WRX?

[pearl]

Hello. I currently have a full catless turboback, the car is reflashed by Ray & Turbotek, and has a set of Prodrive springs. After going to the track, I'm craving more power. I would like to pick up at least 5 more MPH on my trap speed (13.5 @ 100)

What would you suggest to give me that little push? My car still has super low mileage, so I really do not want to swap the turbo out. I'm not looking to make really big expensive mods, but just that little UMPH to get the car down the track.

Will a bigger/STi top mount help out THAT much more? Even some sort of rigged track intake through a empty foglight hole?

I will most likely be getting a full tune after I find the right set of mods to hopefully grab that 5 MPH