The Rear TRD X-Brace doesn't come with any hardware, you reuse the stock OEM pieces. The only thing that comes with the bar is 2 pages of instructions (which are in Japanese).
As for the torque specs, the 2 bolts that go to the firewall get torqued to 740 kg/cm, which is 53.52 ft-lbs (54 ft-lbs). The 4 nuts that screw onto the strut top studs are torqued to 820 kg/cm, which is 59.31 ft -lbs (60 ft-lbs).
RePete, if you torqued them to 70 ft-lbs, you over torqued them. Undo the nuts and bolts and re-torque them to the proper specs.
I have attached the documentation that comes with the rear TRD X-Brace. The instructions are in Japanese, but here are both pages of it.
