that seems like a pretty tall primary drive, as a comparison my little mx is
74/19=3.894
here's what i do and i'll use my mx125a as an example,
primary=74/19=3.894+
top gear=22/23=0.956+
final=49/12=4.083
=8.933
on my mx125, it still struggles a little with the taller gears and i'm thinking of going down to a 51t on the rear just to liven it up a little more.
to do all that math on your figures you'd be looking at around a 65/12 final drive with the 428chain. pretty close to what Doc was saying.
so yours would be,
primary=23/58=2.522+
top=22/23=1.045+
final=65/12=5.416
=8.983
i'm just thinking back to some pictures i've seen of Hodaka's and from what i recall, they mostly have large-ish rear sprockets.
just a guide and hope it helps.
