I'm replacing all of my bushings with poly, and was about to replace the dtss bushing, but it looks like it might have already been done by a previous owner. The insert looks like a hard plastic (delrin?), and I thought the original was a kind of rubber. The design looks similar to the replacements I have, but I've also never seen the original.

 

Yep, you've already got them.

 

I thought I had a better shot, but I guess I never took one. Here's my hub when I took it off, you can see the stock DTSS bushing has caps on it to keep the dust out.



Mostly just for reference, because as Hot_Dog pointed out, you definitely already have the eliminator bushings.

 

Great! Simplifies my bushing replacement, I wasn't looking forward to that one.