Console shifter pivot brackets - Info

Well, as stated in my above post, I have 2 of the "A" bracket on the bench, one is from a 66 Cuda, 273 with 904 trans, the other is from a 73 Dart Sport, 340 with 727 trans. Both are the same bracket. Go figure!!! Heres a picture of both, side by side. So, you tell me, which is the 904 piece and which is the 727 piece and why!!! Geof