As noted in your other post, the Master Parts Catalog has exploded views and part descriptions...
The list is long and the are a lot of fiddly little ones:
A quick list from memory, looked into it for my 68 S code GT coupe. Did the under dash, had a wiring disaster, and then ripped it all out and gave up on it. Going after market.
dryer
hoses, suction/discharge, sight glass, fittings
condenser and mouunting hardware (and the $50/pr specail clips to protect it from the bolts near the base)
compressor and clutch
brackets and idler (a minefield of similar ones, be careful what you buy)
wiring, underdash and under hood
dash plenum (replaces ducts and heater only outlets under dash)
hoses, clamps and belt
correct crank pulley
different PS pump pulley than non-AC
rad support grommet
firewall seal and brackets (2 pc item)
heater motor "protector", used on A/C cars to protect the refrigerant lines in the engine bay
vacuum can and vaccum hoses
water shutoff valve and special hoses
dash vents (finding a good center one is getting hard, the repro Desert Classic side vents are nice, and almost correct)
drain tube
new core
I am sure there is more I am missing.
Pull and test all the vacuum motors and switches, most are good, amazingly well engineered and built, but not someting you want to find out after installing the under dash boxes, which have about 1/16" clearance to fit, a real PITA to install.
ou can assembly the entire setup on a workbench and run a vaccum line from your car, or use a hand pump to test it all before installing.
Me, I'm going Vintage or Classic repro systems next time as the OEM stuff it a nightmare to route in the dash, pretty much zero clearance on everything. I have no idea how anyone installed it on the line as its really a PITA to get in...