i have a 4x4 intercooler on my 3dr, not a straight swap.
i had to modify the metal air deflector plate a bit up near where it bolts on.. it is a tighter fit, but now looks good. My car is only stage one, but once the 4x4 cooler was fitted i had to turn the boost down a little...
Interesting - on a Saff it is a straight swap - perhaps because the Saff and 3 door air deflectors are a different shape?