That all depends on the guy making them and whether there is enough interest. This is made from high grade Carbon Fibre, 2.5mm thick, and with the topdeck fitted, there is very little flex in the chassis at all, most of which comes from the diff bulkheads.
Only reason I done this, is as much as I like the one from Speedtech, I am not a fan of keeping the stock plastic chassis braces, I think they will be an inducer for tweak if anything.
The topdeck, I intend having the cutouts made smaller to leave a little more beef in thee. The Chassis is also designed to accept the Yokomo BD cell trays, so when new cells come out, they can be swapped over.