Post a wanted add. They were used 73-77 for full size f150 trucks. There is some company that makes them. I think a Bronco supplier. Often people cut them off to use leaf springs.
I know you got it on the way but just for future searches, you can buy the wedges at broncograveyard.com. Thats where I got the wedges for my dana 60 swap on my 78 F150.
Tracbar need to be parallel with drag link. Most people lower the trac bar frame mount, but the better option is to raise the trac bar axle mount. So basically I'm saying make a new mount, but make it over kill tough as there are extreme pressures on it.
If anyone needs some, I have some that I cut off of my '73 HP dana 44 that I am putting in my jeep. i have a set for both sides and they could be re-welded.