I would have to double check, but I believe your are mostly correct. I believe in '87 it was built with the Bianchi Formula frame but then in '88 reverted back to a Ishwata built for Bianchi tubeset.
Nice looking Limited
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk