I'm running almost the same setup as symm, just yellow fronts and blue rears. I can't imagine the chassis brace hindering anything but I don't really see a need for it, with everything mounted right everything is pretty locked in. The truck really does stay planted though. I've seen several arguments about lead weights vs chassis and while I agree the lead weights are ultimately cheaper, you get an over-all balanced weight with the chassis plus less risk of a weight falling off, etc. Symms truck looked phenomenal on the track as well as Mantis, i'm still learning so I'm no where near as good as they are but even I, as a rookie am able to see noticeable improvements with this chassis.