I have been very pleased with the brakes, the instructions are well thought out, the kit is very complete, and the quality of the machining and materials is first rate. I bought the whole shebang with new ribbed drums, but I have an earlier version with narrower but still much larger than standard brake linings. If you want to get them I would recommend getting a new lower front fender stay since you will have to bend your original to clear the brake mechanism otherwise. I also got new Spares Co. balance beam brake adjusters and drilled them out to use as cable routing holders, keeping my originals intact. This is not strictly necessary, since the balance beam is not required.
I tried to upload a cropped picture of just the brakes, but that part of the forum does not seem to be working yet, so you can see my installation below from a previous post illustrating the bent stay and the balance beam routing.