Unless they are wrong and they are steel.
anyway i know it's dear and can be done much cheaper but for just over £100 I can get the brake lines in 1 length already made and bent to fit from the abs/esp pump right back to the rear flexi pipes, it comes in 1 piece with all the fuel lines from filter to tank all together in 1 piece (I imagine the brackets are holding it all together).
it's quite a big job to do and most people would just cut it before the tank and reroute around, but I'm not one for doing half jobs so over the weekend the rear subframe and fuel tank will be removed along with anything else needed, the front subframe is getting dropped 100mm or even removed anyway as I have to fit new front wheel bearings and shockers and springs all around.
Moonstone phase 7 gti6
My Project thread: http://www.306gti6.com/forum/showthread.php?id=119992&page=1