That is what I have also. However, I have seen other brands, but they seem to run about the same price.
One thing about the Plane Power kit, is that it includes the regulator and much of the other items needed to convert. In addition to the kit, I think I had to get a larger ammeter (old one was 30 amp and needed at least 50 for the alternator) and a fuse holder.
The instructions for the conversion are available on line.
Another issue to watch for in the O-200 conversion is the drive coupling. If yours is not up to continued use, some of the parts can be expensive. I think I had to buy the rubber components and found them pretty inexpensive. I would have to look at my paperwork to see where.
Dale