Random Parts Identification

I'm trying to sort some random parts that I have. I need some help figuring out what these parts are from.

This first group of parts came with a 400 block I had bought:
Misc 400 Bracket 1.jpg

Misc 400 Bracket 2.jpg

standoffs? The top one has a groove and a dimple in it.
Misc 400 Bracket 3.jpg

Throttle return springs?
Misc 400 Springs 1.jpg


These parts might have come from a 1968 Chrysler Newport that had a 383 2bbl:
Newport Bracket 1.jpg Newport Bracket 2.jpg


These engine brackets might be from a 1985 D-150 that had a 318:
This one just has LR stamped on it
Engine Bracket LR.jpg

This one has "RT-318" stamped on it:
Engine Bracket RT-318.jpg


These last 2 brackets I am not sure what they are from, but My grandfather had modified them to put a 440 into a 1985 D-150. They might have been from the 1968 Newport? Any ideas?
This one has LR stamped on it:
Engine Bracket LR 2.jpg

This one doesn't have anything stamped on it:
Engine Bracket 1.jpg