The Telltale Clunk

Well, I'm at a loss here. I've had this clunk coming from the front passenger side of my 2004 since I bought it. It only occurs at low speed going over bumps and pits, but it's very loud and pronounced when it happens. At this point, I've gone through all the suspension components I can think of and it's still there. I'm thinking maybe it's a motor mount--never heard a bad motor mount make noise like this--or even a wheel bearing--again, never heard of such a thing, but I'm at a loss.

I've replaced:

1. Struts completely

2. Control arms, including all bushings and ball joint

3. Inner and outer tie rods

4. Sway bar bushings and end links

I thought maybe it was the splash guard for the belts, as it doesn't hold together great and kind of flops around, so I both put new pins in it and removed it completely and the clunk persists.

Is there something I'm missing? Could it be a bad CV? The axles seem to be in fine shape, boots are older, but they're not ripped and leaking grease, but they could just be original to the vehicle? I was happy to replace all the parts I did, as they all needed it anyway, but I don't want to throw more parts at the problem and not resolve it at this point.

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