I took all the tubes and lines off when I did it. Biggest hassle was dropping the left side exhaust. I had already bought the freeze plugs, vacuum tubing and caps. A long, 5mm (I think) allen wrench with a ball head will make it easier. I bought one
after doing my desmog...
Here is a photo of everything that came off--

Not required to remove everything, but I had the air box out and needed the room where the Pair valves were for the Dan Mark fuel shut off. The shoptalk guide looked very intimidating, but once you get started and see what is actually being removed/plugged, it wasn't that difficult.