The Detroit Speed Fox Chassis Stiffening Kit is designed to give maximum stiffness to the notoriously flimsy Foxbody chassis. This kit combines our Subframe Connectors and Detroit Speed EXO Brace. The Detroit Speed Subframe Connectors are designed to give maximum torsional stiffness by connecting the front and rear frame rails. The connectors do not hang lower than the rocker pinch flange so ground clearance is unaffected. In addition to front seat mounting brackets that are stronger than factory, the connectors provide torque box and lower link reinforcement. The greatest value of this kit is that it fixes two common Fox Body issues with a single integrated solution. The Detroit Speed EXO Brace fixes a notorious failure point on the Fox Body platform. This is the point where the upper links mount to the chassis. The factory torque boxes weaken over time and are known to tear or even rip completely out of the vehicle. Losing an upper link mount can result in unpredictable handling and is dangerous at any speed. Detroit Speed has developed an effective bolt-on (or weld-in) solution that improves the rigidity of the torque box, prevents damage to the chassis, and improves the safety of the vehicle. It ties the link pockets into the frame and floor pan on both sides and connects the two boxes side-to-side with a telescoping feature. The Detroit Speed EXO Brace kit is a highly recommended addition to any Fox Body Mustang; especially those that are driven hard with higher horsepower.