I know that Ford makes a variety of rear bars. If only because some guy named "Warhorse Racing" talks about them on his excellent YouTube videos.
There is no sleeve. There isn't one included with the bar. The end-link is only bushings, bolt, nut, and washers, (and I added the spring).
And, I do realize it would not allow compression if there was a sleeve.
Thank you for the kind words about my channel.
I suspect, like most of the autocrossers I know, you will end up with a collection of OEM sway bars. If you don't have a local source for them, MPS Auto Salvage in GA used to have lots of them.
Interestingly enough, the Steeda 1STA used to come with the sleeves and springs (some people didn't even get the springs in their boxes). I've had several people ask me if the spring and sleeve both need to be in place, so I always mention that the sleeve isn't needed.
I appreciate all the pics you (and others) have posted. I'm really looking forward to seeing how this setup performs.