Plans do not include woodparts or any hardware necessary to make these models. You only buy the pattern which is provided as a zip file for which a download link will be emailed to you automatically upon payment. Some email programs may treat this email as spam, so please check your spam folder.
You will need expert woodworking skills to make these models and it will definitely work in your favor if you have experience in making wooden models. Needing these skills should not discourage you as the documentation of this build is very thorough and consists of a full scale 3D plan as well as full scale templates.
To experience the quality of the drawings and give you an example of the mentioned documents you can download the first 4 chapters of the Fordson Super Dexta plan for free, which should allow you to build the entire engine block.