My AIM has the same pic. No second clip.

Pretty sure mine has the nut facing the engine. It is original to the car.

FWIW...here's how mine was found, bolt head toward the firewall.

Well now I have a broken tab on my clip so I have another clip coming.
Thanks for all the photos and suggestions. Great discussion!!

I finally got it. I used a repop retainer this time and I got the switch to go right in with a little effort. I did put the door clip on it also. It snaps on there pretty tightly will hold it for sure. Thanks everyone for all the suggestions and help!!

That looks better. I found the same door clip on a late built car and thought someone had put that there. Glad to know now that it was supposed to be that way. I've also pulled a motor out to find someone had added a brake switch nut to hold the throttle switch from becoming loose or auto-correcting too much when it hits against the firewall. I thought that was a great idea.

Looking good now Jonesy.