I 275 doesn't go around Columbus, its around Cincinnati.
A good running VMAX is tough to beat at lower speeds but lots of the newer cars will eat it up over 100 mph.
I used the Joker brand bar end mirrors and turned the stock bar ends down to fit the mirrors and powder coated the ends.
https://www.revzilla.com/motorcycle/joker-machine-cafe-bar-end-mirror
Visibility is much better, I am a big guy so I have trouble seeing past my shoulders and the bar end mirrors work great.
I have found the Jokers to be well made and very clear.