Lower front control arm is not an A-Arm

[David Pozzi]

I think tha'ts called a torsion rod or maybe strut rod type suspension. The threaded rod adjusts caster if I remember right.
The front frame mount for the rod needs a spherical bearing on it to control movement, also the inner pivot needs a spherical bearing.



This system is used a LOT in circle track racing, nothing wrong with this design in general, check with Coleman, AFCO, Port City Racing, Stock Car Products.
See if Global West has a kit for it.
David