[DanEC]

As much as I admire my dual quads if you plan to use the car for autocross you may want to think about going with a nice center pivot float Holley or Quickfuel single 4bbl instead. I think the 4160/1850 series of side pivot float carbs are not known to hold up too well in competition autocross and gymkanna type events due to floats hanging in hard corners and running out of fuel.

I believe I have heard that more than once. In any event it wouldn't hurt to ask some of the track guys about this.