Ralliart to Evo X turbo swap

So after much reading and gathering of parts I believe I have everything to get the TD04 out of my car. I've got a turbo assembly, brand new oem manifold, all the parts in MAPs conversion list and new o2 housing to downpipe gasket. I'm to understand the downpipe can be reused.
My question is, I want to use the stock RA intake, and I've seen posts about needing a coupler but all links are expired and no pictures show up.
What do I need to get the stock ra airbox to work with the evo x turbo
Thanks!