Coilover support bars, how much interest?

I dont doubt the factory sheetmetal frame rails will eventually start to twist in towards one another. This is not good, besides the obvious, the spring rates and shock settings would never be consistent as things are moving around.
One way to avoid this is something like what was pictured before...a tube from the firewall, coming over the tire/suspension area, and then bent in to attach to the frame rail. I think with some patience, you could come up with a certain bend that would clearance everything fine and work great.
Another way would be, as mentioned, a strut tower type brace. I would run it as tight to the underside of the hood as possible, and then down to the tops of the frame rails. Also mentioned, clearance issues between different combinations will be an issue.

As for the radius rod setup...I would go with 1"x.095 or .120 wall material. Theres building overkill stuff, then there is building stuff REDICULOUSLY heavy.

Now quit coming up with ideas! I wont have anything to build once I get a car for mock up!!! :)