Parts ID needed
 

I received a completely stripped down 69 400 RA III. With it came just about every part and I am down to the few remaining parts that I need some help identifying. Some I have a general idea what they do, but not specifics. Thanks for the help in advance.

1. Back drive linkage?
2. ?
3. ? But it doesn't look like anything Pontiac would use with the small nipple attached.
4. Automatic kick down switch. Mounts to firewall with the gas pedal bracket

Thanks Ed.
I was thinking #1 held some cable or line because of the clamp. Assumed it was on intake somewhere because its painted blue. Same with #2, probably on intake as its also painted blue, a holder guide for something.
The extra nipple on #3 confused me. Had no clue on#4 as the bag of stuff was labeled motor, Car is an automatic.

#2 is the speedometer cable bracket.