okay, just got home, found the black brackets that go under the cross-member. I am assuming they go on top of the chassis brace and under the crossmember (as in an upside-down "U").
Only reason I question is I often think, or should I say over think things. If it was set the other way (like a traditional "U") would it not brace against the torquing effect of the engine. I'm just trying to set it in the optimal orientation.