Mick,
The place I got them from was a small company near where I live, they can get pretty much anything. If you look in the parts book it'll tell you what size and thread the connectors are. We used a pipe bender and a flaring tool, it was a pretty easy job, the worst part is bending the pipes to fit. I replaced the brake pipes in my Ferret with the engine in place, that was a nightmare. It took about 2 evenings work each side to get the pipes connected as I had to feed them through straight and bend them to fit though the drain hole under the engine...!
Pickering Brakes & Clutches
Bridge St Works, Bridge St, Langley Mill, Nottingham, Nottinghamshire NG16 4EE
Tel: 01773 530639
Chris