I think you'll like your Si. Although I've only run 2 autocrosses, here are my thoughts on what the car needs. It seriously needs a shock upgrade and an optimized alignment. Also, Hoosier has just released a 225/40-17. Get those, you'll need the gearing assist. I've got 225/45-17 A6s. The grip is great! Let us know your first impressions of your Si. It would be valuble coming from an experienced autocrosser like you.
