Lower control arm parallel to ground - alignment problems?
Yes, all of the above is possible. I just haven't put time aside to play with it. That's on me. Lotta rough roads around here! I have Gerst front and 4-link rear on my other Dart, coil overs, manual steering, it has 15" wheels, absolutely no comparison in the ride and steering difference between the two. The '72 has power steering.
Back to the orginal question.