I just found out a couple of days ago by accident that the 63-65 Rivieras with power seats had trim that attached to the lower portion of the seat to hide the track and other things. I have read other threads and have a pretty good understanding of how they attach and interact with each other. I do have a couple of questions though. In the attached picture I have a couple of parts circled. Where does the piece circled in red go and/or attach on the driver's seat? The piece circled in blue attach