Im just sorting the clutch line on a Duratec and have used a Puma line as it has a metal pipe with a flexible section which can join to the lines I installed in the chassis, rather than the plastic line from the donor car (ST150).
Ive just noticed that the metal part of the line is a fair bit thicker than the standard 3/16" brake line I plumbed in.
Does anyone know if a 1.6M run of 3/16" line likely to be too small for a clutch?

Won't make any difference whatsoever

Thanks - I hoped that was the case.

Yes I have used 3/16" in rear engined cars with no problems