Are those clear (now brown) hard hoses on the banjos nylon? Anyone tried replacing just the lines by re-using the banjo fittings? Are they also called Tecalon? What size are they and where can I get some?

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked