Fabricated A-Body spindle ideas and discussion

Can someone explain why we want a low RC? Feels like the roll couple gets bigger then, unless we are talking about something that is fairly short like a Corvette or something. On a car like my Duster where I can only get it so low, seems like I want a short roll couple rather than get the RC low and make the roll couple bigger.

In regards to moving the UCA mounts, in the widebody A-Body thread @72bluNblu suggested using an early A-Body k-frame and moving the rails in so a 315 could be fit under the front fenders. I'm not sure that is a good option just because (I think) the steering box loses out, but it is kind of inline with moving the mounts. But if the LCA mount were moved on on the earlier K-frame to maintain the later TB location, it would result in the suggest move of the UCA mount. Ton of work and not sure it is the easy path, but an interesting idea to chew on.