[KTL]

He has a collection of red and green non-inverted damper inserts. The non-inverted type is what goes in a Boge or Koni style strut, if i'm not mistaken. Basically his pictures, ignoring the cut strut tube with knuckle on it, are showing an attempt to install the coilover parts on a non-inverted damper insert. They're supposed to be installed on a Bilstein strut housing/tube.

Also I agree with Driven97 that a bunch of those gland nuts are not applicable here. Matt is correct that there's various types. One of the closeup pics shows two types- internal thread nuts and external thread nuts. They are for securing the damper insert to the Koni or Boge style strut tube AND they wipe the damper shaft of crud as it moves up and down. They're not used with the Bilstein coilover conversion.