Turbo Oil feed n return sizes

I've been looking to buy the oil feed and return pipes for the Disco turbo and they are turning out to be rather expensive ( £130+VAT for both ) so i was considering making my own and here's the question.

What sizes are the threads for the Oil Feed at block end & turbo and thread sizes for the return at turbo end and block?

Does anyone know what pressure the oil is fed at ( to get the appropriate pipe as the original is a solid pipe )?

Much appreciated

depends on revs ,but whatever oil pressure is normally 60 psi ish