A day after they celebrated their Stanley Cup victory with a parade, the Blackhawks were still giddy from the experience Saturday. But they also know that changes are ahead this summer. GM Stan Bowman said the team?s core will remain intact, but that the roster will be altered because of salary cap issues. ?We?ve got a good group here. We?re going to do our best to make sure that we have the right mix for next season,? Bowman said Saturday.