Originally Posted by na2ub (Post 11903204)

My 79 CIS had the female cone with nut on the engine side, which screwed on to the male cone chassis side return line. I do believe this configuration changed over the years, so you will likely need some adapter. I can't speak to the 83 CIS, but your 79 should have 3 lines that go through a metal retaining bracket on the driver front of the engine bay. 1 is fuel in, 1 is fuel return, and the big one is the brake booster vacuum line. The fuel in, should terminate in a J bend fitting that goes to the top of the accumulator. The return, in mine, looks as you show it, a male cone.