The kit should be available from any Hobie dealer, but probably not a stocked item.
True, we all can get them. I've installed 3 so far and it really adds a dimension of sail control that the wave is lacking. As Mary said it really helps the sail not collapse on itself off the breeze.
The sail does not collapse on itself off the breeze -- on the contrary, it becomes very full and powerful, especially up at the top, and makes the boat want to (or actually to) pitchpole because of all that power up high.
