@dakazman
Thanks for the link. Banks used to have most of that on their website before the new people took over the parts section. So I know the part number, but no sizes given.
I'm ordering some other parts, so I'll ask them if they know the size (can even sell me one
This forum really is excellent. Thank you for answering all my questions. The rebuild is going well (after the 10 year hiatus).
I repaired the bodywork where the 2nd fuel tank will sit at the weekend and am currently fitting a 2nd tank to my S2, along with the side mounted filler caps. Have decided last minute to fit some new [long] radiator pipes, rather than use the old ones. So a few steps back as I need to take the engine/box out again. But I don't want to have to replace them again in the near future and it's a whole lot easier with the body off