The solution is the Mishimoto direct-fit top-mount intercooler engineered specifically for the 2008--2014 Subaru WRX. This intercooler utilizes durable cast aluminum end tanks TIG-welded to a highly efficient dense bar-and-plate core.
Mishimoto for 15+ Subaru Impreza WRX Aluminum Radiator Stay - Red
Mishimoto for 15+ Subaru Impreza WRX Aluminum Radiator Stay - Black
Mishimoto for 13+ Subaru BRZ / 13+ Scion FR-S Oil Cooler Kit - Black
Mishimoto for 08+ Subaru WRX/STI Polished Aluminum Coolant Overflow Tank
Mishimoto for 08+ Subaru WRX/STI Black Aluminum Coolant Overflow Tank
Mishimoto Black Aluminium Coolant Overflow Tank for 2008+ Subaru WRX / WRX STI