The springs arrived.
A buddy wants me to make a bolt-on undertray for track events. Basically a huge venturi, the theory is that it would provide some good downforce without much drag. The unknown is how to deal with air flowing in from the sides; I don’t care to mess with sliding skirts. Anyway, that’s on the back burner for now; I rather make incremental changes because the results are easier to quantify. I’ll start with the springs, then new tires, and go from there. That said, if the undertray is bolt-on, it would be easy enough to do some back-to-back track tests. One thing at a time.