Yes speed demon is benefiting from the diet. Ask Steve Watt. I don't have the numbers to back it up, but I am certain of the facts. More Weight will never make a streamliner accelerate harder, (weight bias may) it may make it easier to drive and less prone to spin the tires though. Pour throttle control makes the car spin tires easy which slows down the car, it isn't too light. This is based on zero aero lift which should be the case for a liner, now a roadster would be a different discussion. Variable aero drag can work and does work for higher hp cars. I fall into a gray area with moderate hp. Being lightweight and four wheel drive is my choice at the moment although their is some mutual exclusivity here... Being low on hp I don't want any extra aero drag. I have ran the numbers forward and backwards on this, including my own real world experience. Now blown nitro hemi power levels are not in my experience..