Originally Posted by highline
wtf is it?
A different kind of chassis brace. One that ought to increase the amount of torsional stiffness provided by the (coupe) roof structure by tying it in better back there.
Mostly it's aimed at the corner-carvers among us, but a drag car that's got enough power to benefit from using a huge drag-race rear antiroll bar will also benefit from it.
Actually, it's not even that new to X-brace that area - but using tubes instead of light-gauge sheetmetal stampings is.