I don't much care about IC. I pay attention to angles, heights, spreads, I will plot IC just as a piece of information that I can use. It is a result, not a setting for me.

That said, it can give you an idea of where you are going if you want to compare different geometries and settings. But it's the geometry that determines what happens.

As far as something or someone telling you where to put the bars, all anyone can do is give you a general starting point. 48" out - 7" up with the bottom bar level to 1* down. There you go.

Where to go from there depends on your video and what you want the car to do differently. Don't forget to use the shocks while sorting it all out.

Ladder bars are easier. Lower is less violent, higher is more violent. Use a good shock to control the separation.