Thanks, Bob. I am glad you suggested a racing operation's opinion. I have one scheduled to come look at this before I tack anything together.
Here's the setup for the outer arms. IF (big if) the arms are 7" and 9" long, then the 4-link's holes will help guide the install. I can go forward 2" for longer rods (9" and 11") and better suspension articulation at the hub.
Regards,
Paul