Sorry guys, I didn't think waiting over a week for some kind of response was being impatient.
Thanks Tim for your thoughtful response. I've previously looked at the drawing on your web site and it was helpful. As my message indicated, I was wondering if anyone has fabricated their own carrier, as I know the originals are very hard to find. I would be interested in pics or drawings of an owner-fabricated carrier for either the under bed style or the side of bed style.