My daughter bought a 1997 Malibu last week. Anything I need to watch for. It has 104,000 miles on it and the dealership replaced the struts.

Watch the following:
Coolant - if it drops, have a pressure test to determine the where the leak occurs from and suspect the lower intake manifold gasket.
HVAC - if the blower motor stops working on settings 1 or 2 then replace the blower motor resistor.
Struts - if the front struts make noise try putting some oil in through the top of the towers and budget for replacements.
There are plenty of other common concerns that can be found here...