Originally Posted by
Jeff Wills
Not IG (Interactive Glide), which showed up in the mid-'90's. Sante was Uniglide, pre-Hyperglide.
Right you are; I meant UG. There is no such thing as an IG cassette.
Point being, the Sante hub isn't going to take an 8 speed cassette because they're HG and don't fit on a UG hub.
However, a Sante freehub could likely be changed to a 7 or 8 speed HG freehub body, if it is even a freehub - most of those bikes were freewheel.