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Here is a pic of my UCAs with tie rod being used as a ball joint. I wanted a
clean look. Using pushrods with rocker arms so the coil over and ARB will
be hidden in the nose.
The UCA tubing is 1" x 0.187 wall for the part with the tierod and 1" by 0.125
for the other part
Adjusting camber will change caster.
The upper frame rails are not parallel - they are wider at the rear than the front
This creates anti-dive geometry and allows for caster adjustment.
I made the inboard mounts wider than the control arm bushings by about 1/2"
Shimming adjusts caster. It changes camber slightly so getting caster and
camber adjusted takes a little time.

Thank you, a very neat installation. Sadly I can't hide my dampers and springs as the engine occupies the space between the wishbones. I once had a Formula Ford with inboard shocks.
What is the uca/ball joint thread size and how did you form it?
Love your nose cowling

The tie rod shanks are 3/4-16. I drilled and tapped in in my lathe.

I bought a tap that was for a class 3 fit which is tighter than standard class 2,
per recommendation of aerospace engineer friend
There is some fancy nomenclature on good taps which denotes the class fit
etc. I forgot what is was though, but there is more variation than i expected

The drill size is 11/16. The tubing was 1" with 3/16" wall, so the ID was 5/8.
You can get tubing with 11/16 ID but the surface is very hard from the
drawing process which makes tapping even worse.

Drilling was easy enough but tapping was a B###H! The close thread fit required
a lot of torque to tap. I used the lathe to start, but it didnt et too far. I ended up
using 20" crescent wrench to turn the tap, to the lathe did make a good workpiece
holder.

The end result was an excellent fit with no detectable side-side play.
I notched the tubing in my milling machine with a hole saw.
I made a fixture to weld it all together.
All 4 uppers were made this way. Lowers have press-in BJs

My local NAPA got me an ES150R for trial fit purposes. Its perfect. Problem solved.

This thread is now closed, thanks for the help guys.

Curious where you sourced that unique looking upper arm. I might have a use for that.