-fuel rail outlet (Fuel Pressure Regulator), fuel junction block (fuel feed on lower driver's side of block) and cold start injector port: 12mm x 1.25. Adaptor to -6 AN: Earl's part number: 991945.
-fuel rail inlet (Fuel Pulsation Damper): 14mm x 1.5. Adaptor to -6 AN: Earl's part number: 991954. Aeroquip part number: FBM2240. Russel part number: 670520.
-the fitting on the feed hardline has some bizzare fitting style i have been unable to find (took it to MANY speciality shops...got close, but nothing works). your best bet is to just keep the rubber line from the hardline to the junction block or cut off the hardline fitting and install a 3/8" flare adaptor.