Call Joe! If its an ISC ....there's also a couple others out there as well.
For comparision purposes, the G-force version (the first to market, and the originator of the concept for the 1st gen) uses a bolt in anchor for the front peice that bolts to the double stamping in the tunnel. Early versions had the rod end in single shear, later versions were double shear.
I imagine the exact placemnt is of great importance, so be sure to accurate in your determination of WHICH it is, and then the proper placement. If you discover that it's indeed a G-force, give them a call, or PM me as I have the specs on that one.
In general, the three link solution is a very good one.