Nothing has changed over the years. Speakers are mostly interchangeable things where you have the same old parameters that you have checked for many decades. Did you need a refresher course on Ohms and Watts? Sorry but it's all been beat up before so tell the forum what you really need to know. And no, no one can guess if these will be fine. The details of Ohms and Watts is not given (by you) for the old and new system.