As you noted, there are several on the market. Total Cost Involved (TCI) and Fatman Fabrications make good kits. If you have never done this before please take the time to research the different manufacturers and read as many blogs and watch UTUBE videos until you are no longer "confused". It is not a weekend project. The S-10 deal usually involves a total frame swap and a special kit for mounting the AD body. The C-10 swap when done properly (narrowing the crossmember) will look just fine but is a lot more work. Good luck with your project.
BTW the first thread in this forum will have some valuable information for you.
