Re:
I have these, no inner du bushings though. They fit the current bushing pictured that doesn't have them fitted. The narrower ones would need an o-ring or washer as they tough in the middle and there's a tiny bit of side to side movement, the fatter ones are fine, but not the same size as the ones at the top.
I'd recommend replacing the du bushing in the eyelet as unless the spacers I found aren't the correct ones, they slip in a little easier than I'd like.
You are welcome to any of them, I only have a couple of full suspension bikes and both need proprietary shocks and fittings.