When I was researching handlebars, I compiled these statistics:
Height:
Early S ----2 3/4"
Late S -----2 3/4"
C -----------4 3/8"
RT & T -----5 3/4"
Total Pull Back:
Early S -----5 1/8"
Late S ------5 5/8"
C ------------6 1/8"
RT & T ----10 3/8"
Width:
Early S -----23"
Late S ------24"
C ------------25 3/4"
RT & T ------27"
Center:
Early S ------4 3/4"
Late S -------4 3/4"
C -------------5"
RT & T -------5"
Diameter:
S bars are .695-.700" ID
C, RT, & T bars are .615-.622" ID
I can't comment on whether the K100 and K75C bars are the same; haven't enough knowledge. I suspect the standard K100 used "T" bars.