Wish I saw this before I started tearing the dash apart! Is it as simple as piping the internal (behind firewall )pipes to eachother and the external (engine loop) pipes to eachother?
Made a start today, got some bits off but got stuck because I don't have any eTorx sockets. Got some coming tomorrow.
Looks like the butcher has already had a go at this before, cut metal and quite a few missing screws:
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