Yes, that is the special parts that are needed for a complete & sano desmog on an 81-87 2F engine.
The AP idler and EGR compression plug are specific to the 79-80 2F, being smaller than the more common 81-87 2F.
The 79-80 AP idler takes a few days to custom cut and weld together, but it can be done, no problem.
The EGR compression plug is not yet in production for the 79-80. The raw material is here and if you're interested it will move up the priority list for machining, just LMK.
Thank you. I'd like that very much.