Yes. I just received my risers yesterday. A friend and I installed them after work. It took us about 15 minutes.
Yes, you will use the rubber bushings with the risers.
I recently purchased a Mustang seat for my bike and though I liked the seat, it made me sit a bit further back than the stock seat. These risers have given me a much more comfortable riding position. They are very high quality and I am very happy with the purchase.