I think you mean the mass airflow housing...? If so... no one sells just the housing for the 2.0 or 2.5 as far as I know. Simota and Corksport provide a new housing with their intakes. The rest of the brands its integrated in to the intake tube. Its not like on the older obdI & II cars where companies sold larger diameter MAF housings with re-calibrated sensors.
I had a Pro-M 80mm MAF on my 90' SHO and they sold I think anywhere from 70mm to way over 90mm for the Mustangs gave a bit of power