Its some work to get em in, as they use a square-ish hole in the roof to mount, and a plastic pushpin to to expand the mounting feet inside the hole. I cut some 13ga al. Sheet to fiit the feet tightly, cut a slightly oversize hole in the overhead, then riveted the al. Feet to the overhead. Bit of a tight squeeze with the cage, but having the extenders and extra flap is so nice.
Ok, well I went through my parts pile, and my trash, it must have gone out with last weeks trash. Sorry, I guess that's the way it goes, save it for years, and pitch it a week before its needed.