In the middle of restoring my 66' and had a few questions. Thanks!

1)Are the u-joints replaceable or repairable for the steering?



2)These tubes/spacers must have come off my suspension somewhere but I'm not sure where?



3)Also these 2 spacers I'm not sure where they came from?



4)Does it make sense to re-plate all of my seat hardware when I can just buy new ones from Stoddard?



5)This small 911 emblem was on my dash. I know it doesn't belong there. Anyone know what it is from?