Thanks FlyerRich for the assist.
Glad you like the info CW. I just added a photo of an original 360 rear side frame. They didn't have a coupler because they were tow bar connected to a 361 or 364 b-unit depending on whether they were the head end of a 362 or 365 SF PA/PB combination.
Also for future reference - subtitles on my How-To or Photo Gallery pages usually provide photo enlargement info and/or a link to any related video(s). For example, "click on photo to enlarge, click here for a video".
Dave