I was building a mid engine tube chassis for a 240sx road race car. I used a software package from Performance Trends to design the front and rear suspension in a double wishbone style as opposed to Macpherson strut. I did a very basic design of a modular type upright that used 370z wheel bearings and had a removable upper ball joint pickup point that could be swapped to change SAI. The tie rod end points were also swappable. The whole chassis was then desinged in Bendtech SE and Fusion 360.