Well, we actually did it. I could never get under there, but my wife got in without us removing the seat. The problem was getting it to stay there while she applied pressure to pop it in. I wanted to share my idea which actually worked. I drilled a tiny hole right in the center of the stop. I took a piece of #24
stranded wire (I used white because my interior is black and it made it easier to see) and threaded it through the hole from the flat side and put a knot there. So, she fed the wire through the hole in the top of the clutch pedal, pulled it through with needle nose pliers. Pulling on the wire kept the conical part of the stop right up against the hole while she pushed it in, I think using the tip of the needle nose. Then we just pulled the thin wire out the front. Don't get me wrong, the whole thing is nearly impossible, but I hope this technique helps someone.