The factory brackets were welded together around the bushings after being mounted on the sway bar. To replace the bushing, you have to cut the welds and spread apart the bracket halves. It looks like your shop did that since your bar is now naked. The question is, what did they do with the brackets? PST sells a poly bushing kit with the strap part of the bracket, but it isn't a direct replacement for the factory bracket — it needs a heavy L-shaped piece to mount it to the K-frame, and this isn't entirely satisfactory as it only provides a single-bolt connection that can flex (or even rip out of the K-frame flange).
Let's face it, the factory bracket was not a great solution. It made for solid alignment and rigidity at the expense of convenient maintenance., and with no ability to change bar diameter. Aftermarket bars use different approaches — Hellwig, in particular, has a very robust and well-designed bracket-and-strap solution.