Looks like a late 60's T100 Tiger 500cc motor with a ridgid frame and stock size wheels. I agree with Kirkus, not really unique. Also agree with Leftarm "Clemenza's" remarks.
Sara's bike has been featured on the cover of Big Twin mag and she gets extra ink because she's a woman (not that there is anything wrong with that).
Here's a blog with more info and pics to help with your "crush":
Edit: I just read a thread you started in the vintage section regarding your plans to build a bike/bobber. This type of bike is a good city bike for "bobbing" around. It is not what you are looking for in terms of highway cruising at the speeds you have stated. You would be picking up bike parts and parts of your kidneys within a couple of hours. Good luck with your build.