OK, here's the deal. The rivets have nothing to do with taking the motor out. There are 3 dimples in the door panel. There has to be holes drilled where these dimples are. It will have to be a 1/2" hole to get a deep well 5/16th socket in there. This is the same system that is on my '92 Ford F-250, which I've changed about 4 window motors since I've had it. Once those 5/16's bolt/screws are out the motor comes right out. The wires go to a plug about 10" away. I think the new motor does not come with threads so one can either self tap the screws that came out into the new motor or one can tap them and put a bolt in them, which is probably what I'll do. I don't like the looks of those cheap 5/16th screws. I'm waiting on the motor now which I got on the internet at DYI for $58.00 and free shipping. I've taken some pictures and will take more to post on here so the next person will have an easier time of it than I've had. I assume an Expedition is the same as a Navigator. I'd post it over there on their forum but, although I've been a member for years, it won't let me post there so piss on them. I've had more help here than I would have there anyway and for that I thank those who have responded to my thread.