The 720 truck had the same engine witha carb. Not a real good one, but a carb nonetheless. You can put a Weber down draft carb on them, but they aren't too great either. You will have to check racing forums for a racing set up. Note that Weber now has single barrel side draft carbs you might could adapt. The problem with these engines is they don't like to rev. Its a truck engine. That being said, they do pretty good in truck racing classes.