Think I see three specific needs in your original post. All appear to be generic (all plants) questions since these items were all installed at the engine plant not at the car plants
- What is the correct routing of the steel fuel line from fuel pump to carb? Since your car would have a filter at the pump you would have a solid (threaded fitting to carb front bowl surface) rather than the 66 fuel filter there.
Here is a picture on an engine from around that period
Another from 5R1637xx
Close up of bend - ignore the owner painted the intake blue
- Does a HiPo carb on an original Feb 65 built car uses the 1" spacer I see on non-HiPo 289s?Yes
From same blue painted engine example above. Likely the engine may have been rebuilt so spacer doesn't have much of the original black paint left on it as it would ahve had originally. Carb finishes are well worn - long gone
Painted spacer on this example and others
- Did same use a PCV valve and where are the connections made on each end of the molded (?) rubber hose?Molded hose from carb base spacer to the PCV valve in the passenger side valve cover (rear top). Uses spring clamps at both ends and the molded hose has Ford markings inked on the exterior surface of the rubber
You can see the routing and some of the details in a picture thread in the Library
Sub-Assembly & Supply Plants »Topic: Late 65 Production Year - Cleveland Engine Assembly Plant Picture & Discussion
Hope this helps