Most 98 - 05 parts should be. A fair number of 95 - 97 parts will be, as well.
Not likely. The body changed in 2001.
All body parts will, and most of the engine parts will too.
1988 to 1991 most parts are interchangeable - body styles an other things changed after 1991
From 1988 to 1999 will ALL interchange
It depends on what parts you are looking to replace, mechanical or body parts. List the parts you are looking for.
1929 and 1935 Chevrolet body parts are not interchangeable.
Most engine parts and allmost all body parts are interchangeable with some modification. Interior is all the same.
Part interchange ability between Chevy Celebrity's and other "A" body cars is fairly limited. The next closest relative of the Celebrity is the Pontiac 6000. Some engine and transmission parts are interchangeable, but body parts in particular are not readily interchangeable.
95 - 2002, except in the case of the grille, headlight assemblies, and core support.
If you have the 4.3 L engine, no.
Some parts on the first generation 1995-2004 are interchangeable. Depends on what parts you are referring to.