To add to this post.
I found another discussion, if you go back 5 pages, and look at a post by "privateer" titled, A-ARM play on upper arm. It has an attachment which shows another possible failure point and really is a good look a our cars.
I recommend a look at.
W
Squeaking
Moderator: redstangbob
Re: Squeaking
CDN Member since 1975 #2086
Flock: 1964 Landau Original Family Owned
1964 Sr Convertible "RAVEN"
Past: 2003 Blk Lab "RAVEN" "RIP"Nov 15/17
1964 Lincoln vin4Y86N00007
1964 Red Convertible
Flock: 1964 Landau Original Family Owned
1964 Sr Convertible "RAVEN"
Past: 2003 Blk Lab "RAVEN" "RIP"Nov 15/17
1964 Lincoln vin4Y86N00007
1964 Red Convertible
Re: Squeaking
It may be the front sway bar, they were installed factory, without grease fittings.