The Tank
FRF Addict
Im on the same page as birdman here...as long as they have the same capacity, the location and routing is irrelevant, unless you are doing a ram air. so it really just comes down to the quality of the tune, which i would be wary of considering the truck from the factory has its own, which is basically the offroad mode. and that mode is awesome offroad, and i would not want to mess with it in any way.
I just got done emailing SCT they said they have support for the Raptor and can tune the off-road mode.