Replacement Vinyl or Carpet for the Cab?

E450 is a confusing animal to many parts places. E150-250-350 can be a passenger van or a cargo van. Maybe even a cutaway, but E450 is only a dual wheel cutaway. Still the cockpits are the same. I wonder if passenger or cargo cockpit carpets might be too long for what's left of the cockpit of a cutaway. That's all I can think of.
Our Jayco cockpit is carpeted same as the rest of the house, so it's possible the motorhome prep package doesn't include carpet, or maybe only has rubber mat.