This Hawk's frame is aluminum box shape. I like this simple box shape frame.
After several years,HONDA developed another way to make aluminium frame.
Please see VT250SPADA's frame. Which has more complex shape.
Do not you think VT250SPADA & GT650 are closer brother in whole shape?
The generation of these models are beginning of aluminium frame which fed back from racers.
I love these simple HONDA V-twin classics.