Nice runs, no doubt Auto-x is a blast, and like the others, would recommend trying it out if you haven't yet. My instructor told me if you never spin out you're not pushing enough, he also told me to short shift into second, and indeed that did improve my times. I pretty much stay in second for most of the course. Which brings me to gears, I think a 3.55 setup just might be perfect for auto-x. Good luck and have fun fellers.