When using rx-7 based turbos on hemis some time back, the fitting that 'fed' the turbo was a solid pipe that a hose went into. To adapt it, the pipe was cut and a male flanged fitting was silver soldered on there, and then 'ordinary' copper pipe was used (actually used some leftover pipe from an lpg conversion). Nothing more fancy than a single flare (important not to even attempt to double flare copper, it'll work harden and crack almost instantly) and nuts to suit.

diagram(s) on request, but the whole thing cost around $25 - and copper pipe will have no dramas (it handles at least 3 times the pressure as any oil line holds when used on lpg setups) it also has the advantage of being easy enough to bend/shape to suit the application / layout as required.