i think i've done to my frst what your after,

it's got a grs twin pass custom intercooler which is 3/4 the size of graham massive front one for the frst but it does'nt involve cutting the top of the bumper which gives a standerd look, and it has a 60mm core which takes in as much air as his front mount for his s2 ones, i've also got a standerd size grs alley rad