Giles, Your air pipes are shipped.
I included a few solenoids for the front struts.
Anyhow, I didn't include my home made tool, but I took these pics of using it. You can easily make one from the body of a "bic" pen.
Here's the 2 pieces of it. 1 about 1~2 cm max. Sliced down the edge. Other piece about 6 cm, also sliced down the edge.
IMG_0102 by Dans Subaru, on Flickr
Small piece fitted over the air line
IMG_0103 by Dans Subaru, on Flickr
Longer piece now slipped over the first, and pushed up under the locking tabs. Leave the smaller piece puled back a bit still so just the outer tube is under the tabs, all the way.
IMG_0104 by Dans Subaru, on Flickr
Now use a small tool, (tip of my multitool here) and slide the small piece tight up under the first, pushing the tabs outward. Hold pressure against the outer tube to keep the tool tight against the tabs.
IMG_0105 by Dans Subaru, on Flickr
Fingernail used to pull the one tab that lines up on the spit in the tool.
IMG_0107 by Dans Subaru, on Flickr
And then pull the tool, and the line toghether to pop out of the fitting.
IMG_0110 by Dans Subaru, on Flickr
Giles, hope this helps you and others.
anyone that needs an Air Compressor for these cars PM me I've got rebuildable ones for parts.