65 Barracuda daily driver

Are you referring to the tail housing? There is a big, heavy snap ring under a cover. If I remember correctly, the cover has two bolts and it's under where the crossmember mounts. You'll need a heavy duty pair of snap ring pliers to spread it apart and slide off the housing. To install, you just slide the housing on and the snap ring will engage.

It's this thing:

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I was able to remove the cable per the instructions in the FSM, but it doesn't tell you how to remove the housing. It's got 4 or 5 bolts that I removed, but it doesn't budge. It's very much possible that it's just caked in there, but I don't want to risk damaging something with too much force.