My family loves Ina Garten's Mac and cheese.  My problem is that I can only find the regular elbow macaroni.  I'm looking for the kind used in Stouffers mac and cheese.  They're bigger with a softer texture.  The holes are bigger, so more cheese gets into the noodle.  I've searched all my grocers, even Italian specialty shops but no luck.  Can anyone help?

Try some of the other pasta shapes.  I like raditori for mac-n-cheese.  I know it is not traditional but all the little ridges sure do hold a lot of cheesey sauce.  You could try a rigatoni that has a little larger of a hole in it.
Have fun experimenting.  I can't think of a better thing to experiment on!