Hawk HP+ pads are made for the Subaru WRX that gets driven to and on the track. The HP Plus offers increased friction over the HPS, at the price of a little more noise (squealing) and more dust. Brake squeal is not uncommon in the HP Plus due to the higher temperatures required for their peak friction, but once warmed up, this higher operating temperature will consistently allow your Subaru to brake more quickly, with minimal fade. These pads are excellent for the occasional HPDE/track day or for the very competitive autocross driver.
These pads fit all 2004-2005 WRX models and 2003 WRX models with the D929/D1004 caliper combination.
If you have a 2003 WRX, you need to measure the dimensions of your stock brake pads to determine which calipers you have.
Subaru WRX 2003-2005