Originally Posted by
Metacortex
I can confirm that bike appears to be all original except for the tires. It even still has the original toe clips and straps. Because of the pedal reflectors and seat tube decal position I can tell it is a late '71 model. With an original unmolested bike like this I would not upgrade a thing. If you do upgrade anything I would highly recommend keeping all of the original parts intact.
+2
These are getting harder and harder to find without any modifications done, and that saddle speaks volumes about how your example has been stored/maintained. There will always be bikes that are lighter/faster, but they don't make these anymore.