This is my 8448 supercar, I decided to take the body off, order 2 pnuematic kits and make this a hopper!  not done yet, but got it to go up and down for now.  I need more tubing, and then I can get a 4 switch action going, for front back and side to side motions.  I want to make this car dance...  then I will decide on a body style!  its basically as the directions say for the chasis of this model, except for some minor modifications to the suspension and a cros stablaizing bar in the rear.  the original shocks are gone, and these air cylinders are attached to the upper control arm of the car!  enjoy and check back every once and a while to see if I have gotten any farther?!  if you have any suggestions or idead for this, email me at m2low@home.com or m2low@hotmail.com