Shipping an 8.75 center

That's for a whole rear end. I looked at that one. Well I didn't look all the way down the thread but he mentioned wheel studs near the top. Maybe I missed it
That's my how to and it is specifically for a bare housing. But the method holds true for a center section alone

In the case of the housing, the ends are flat so they could be against the ridged foam but a center section does not have any flats, so that's why I suggest you reverse the foam and plywood in the box.