I/C S-TYPE AL GDB(E) EJ20713001 AF004 SUBARU IMPREZA WRX STI 4D 2005 EJ257 Features Front mount intercooler kit with S type core. (Core size : 600 x 244 x 65) New S type core was developed only for GDB kit in order to improve response. Because front mount layout usually has a demerit of slow response. Pipe layout is designed as straight and short as possible. It enabled as quick boost response as stock intercooler. When a vehicle is stopped, stock top mount intercooler core