Larry,
The 230/155hp engine was available in both the 1964 ChevyII and Chevelle.
The Chevelle could be any model not just the SuperSport. They 230's all got the chrome trim in a Chevelle.
Don't know about ChevyIIs as to what models could have a 230 vs a 194.(in brochure it looks like the 230 could be had in any ChevyII )
see page 7:
https://www.lov2xlr8.no/brochures/chevy/64nova/64nova.html
