What I would like to know if anybody has installed these items from ground up restoration. Can you give me any advice on installing them correctly. They did not come with any instructions. Thank you.

I just installed these a couple weeks ago . The easiest way on my 66 was to remove the sides and backs. Press it in place and run it continuous to the end of the flange and then cut the end with wire snips. Then slide the end caps on. This method worked great for me.