I have not done this for decades and not on a P38, but what do i need to be able to do some brake lines? a flaring tool (which flare type do we need to use?), some cunifer (size?) some ends (thread/size?) a pipe bending spring one of those proper pipe bender things maybe ? All links/ recommendations welcome... thanks in advance

Rob

A flare tool that can do a double flare, something like this https://www.amazon.co.uk/Silverline-633545-Pipe-Flaring-9-Piece/dp/B000LFXPQ0/ref=sr_1_26 or https://www.amazon.co.uk/Double-Flaring-BOROCO-Degree-Automotive/dp/B0B56PCDXG/ref=sr_1_47, some standard brake pipe size 4.75mm or 3/16" Kunifer copper/nickel or copper pipe and some M10 fittings. If using Kunifer or copper, there's no need for a bending spring or pipe bender as it is soft enough to bend by hand.