Robert, I hope our input is incouraging to you rather than discouraging. I am very glad to try and help someone that is making an effort to help theirself....but....that design will never work. Your lower a-arms are way too short, which makes your upper a-arms way too shorter (?). They need to be around 15" and 10". The short arcs of the short arms will make everything happen way too fast and your graphs of them will go off of the chart. As I mentioned earlier, the front lower a-arm design is usually detirmined by the limitations of the steering linkage, so let us look at that one first. 24-1/2" inches is a magic number here, it does not matter what you are building. That is the knuckle to knuckle distance on all of the Mustang type aftermarket rack and pinions. Since the inner lower a-arm pivit should be directly in line with this to avoid bumpsteer, use this to establish that point. Going from there out to the spindle should be in that 15" range. Now use the spindle to establish the upper outer ball joint and work back from there to locate the inner mount to give a correct upper arm length. Remember, a chassis is designed from the outside in, not from the chassis out. Once you have these locations, put the chassis wherever it needs to go in order to attach them. Now, at the back of the car, there should be plenty of room outside the engine cradle to use the same lower a-arm length (depending on wheel offset and others) with the same 24-1/2" centerlines and the same upper a-arm location procedure. If you can, not only do you have economy of parts but your roll centers are as simple as they can get.
