Sorry, Evan....
The A body was originally designed for the slant six so there actually are 2 types of center links. The shallow offset one is the slant six version. The deeper offset works on both slant six and V8 models.
You're right! Sorry for the confusion. Not sure why I had a brain fart on that one. Here's a photo I took many years ago. I was actually able to use the slant 6 centerlink on a V8 '66 Barracuda I had a while back. Rumor has it that some factory slant cars came with the V8 centerlinks from the factory too. Go figure!