I race the 03F DJV down here in middle Georgia. I've added the carbon fiber battery hop up, FRP damper stays (the ones that allows you to run a lower profile body and just resently I've added the carbon fiber steering link. I race against TC3, HPI's and all the other cars out there and it's just as fast and as all the others. I still run the fixed upper links on the car. My 03 runs the same laps times as my Yokomo MR-4TC Pro. The only thing that is different between the two cars to me is that the 03 will dive into a turn an then power out, where as the MR-4TC will maintain a line a little better.