One other thing - check the RockAuto list. Find a part, check what else it fits. Do be aware that it may say:
1999 Chevrolet (Monte Carlo)
The parenthesis says that SOME Monte Carlos use the same, or an interchangeable, part.
Also, no list is 100% graven in stone and handed down by $DEITY ... they ALL have errors (all lists in total, not all interchanges!)
Plus there will be some fits/n/works that just do not show up - such as Grand Prix wheels on an Intrigue, for instance (if they fit, dunno, dunno if not.) That's because the style is different.
Other crosses won't show up (front seats) due to styling and trim variances. For instance, when I had a Skylark, the Cimmeron leather seats didn't show up as a cross, but they bolted straight in. And felt WONDERFUL compared to the cloth seats in the Skylark ...
RwP