Appreciate all of the great replies since I posted the original question.  I can understand the concept of not necessarily having an exact cookie cutter approach to producing tractors coming off an assembly line.  It is actually kind of neat that the final assembly guys could tweek things a little and see where it ended up.  Back a few years,  we changed our cars just enough to make them stand out and in some ways they started to look like all the others!  Reference, Baby Moon hubcaps or Spinner hubcaps but the bottom line is they were atuned to the owners taste or what they could afford.  Some were original, some in constant primer and others had fancy paints.  It's great that we can all enjoy our tractors in the same manner and if we want to we can "Customize" to our hearts content.

John, enjoyed your recent articles in HPOC magazine on generators and alternators.  I have another question, can you interchange the old three brush generators with regards to whether they eventually get hooked up to cut-out or regulators?  In other words can I use 77 or 88 generator original with regulator and change back to tractor using cut out?  If you can is there any internal modification necessary?  Thanks for help.      Terry