Here is a copy of an older post with the info and links for low pressure parts,
Here is a link to Honeywell that will help with pilot burner install,
https://customer.honeywell.com/resources/Techlit/TechLitDocuments/69-0000s/69-0519.pdf, drill burner casting and tap for #6-32 screws to attach, don't weld it to the casting. Some have placed the pilot between the spokes of the burner facing in, others have placed it on the outside of the burner ring, both locations work, just note suggested mounting elevation. The object is to have the flame clear the casting and pass near the openings in the burner.
This should get you everything but some 1/4" copper tubing for the pilot gas line from valve to pilot