I have heard a few people talk of these, and well i need them. My torque boxes are cracked and torn to shreads and need to come completely out. My chassis/race shop hasnt done too many 5.0's but they have done one with the battleboxes and said it worked nicely. Anyone else had to have this done and if so what did you use and where was it from? The car is in the shop now so I need to come up with something quick. Thanks guys.