If you checked the link in the Sample Build #4 I posted above, you can clearly see the 2x 140mm front intake fans (the Red LEDs) outside the chassis frame (between the front panel and the chassis), while the radiator sits between those LED fans and the stock 120mm radiator fans of Corsair.
What you want to do, comparing with the photo above, is just have the radiator and the front intake fans outside the chassis frame. So, it's just a matter of not installing those 2x 120mm interior fans.
However, take note the some radiator models might not line up perfectly with the case fans installed at the outer chassis frame. For...