I'm pretty sure the box is all the same. Just the ducting varies between the different versions. Here is a link to Easy Performance's page for replacement Wizaired parts.
CAI_Parts_Content You can see the box is the same for all versions.

Note, it is usually significantly cheaper to buy replacement parts straight from them. The intake ducts were quite a bit more expensive at ZZP last time I checked.

Here is a link to the instructions if you want to check that out. Installation