Let me see if my pictures will post up.
It's hard to see, but the flat (two hole) bracket is the B&M piece on mine. What I did was put the stock arm over top of it on the same bolt. You can see that the nut isn't fully on the stud, so I had a small "safety" weld tack put on the two brackets to hold them togetyer. You can see it at the rear of the arms right where the stock piece bends out away from the tranny.
The stock arm BTW is the double bent one with the square hole (where the original cable used to attach)
I kept the stock bracket so that I had all the features that the working stock shift linkage provides. 1. Backup lights 2. Park/Neutral-In gear(very important feature, for other things to work as designed).