The facelift turbo inlet from Forge is a 3.5" silicone opening, so no it won't fit any rear pipe that tapes to 3" to match the stock inlet.
If you have a rear pipe in 4" with a reducer to 3" (such as the inegrated engineering) then you can fit it with a 3.5-4" metal reducer pipe which is what I have right now with the Integrated Engineering intake.
You can also get the Unitronic 3" cast elbow that has the same fit as OEM - I am in the process of swapping one onto my car to test vs Forge, I'm expecting it to have very similar performance.