Well after sorting the brakes out last weekend, and beating on the car down the 555 yesterday, my little Miata had it's first auto cross today. Considering what I have invested so far, the car did great. Even with 20 years of age I was able to run right there with similar cars. I haven't really figured out what mods I think would make the biggest difference, because in my mind the thing just doesn't have enough power to pull out of turns. It struggled on some of the hills on the 555 yesterday. When coming out of turns trying to accel, if it is at the bottom of 2nd it just straight sucks. I wish I could afford a V8 swap, or turbo, but I really don't think a turbo would pull down low in the RPMs anyway.
So anyway, I'm still having a blast with this car. If anyone has ever considered auto cross you just need to go do it, hands down more fun then 10 seconds or less and standing aroud.