There can be insurmountable differences from one year to the next, and with four years difference, it is almost a sure thing, but it depends what those are. All cars went through big changes from '95 to '96 models. Other than that, common changes include the number and spacing of ignition timing cutouts in the flex plates, (this is a big cause of no-starts when using a '97 flex plate on a '98 truck), location of sensors, even the angle of injectors. You can be sure some sensors will be different, so the wiring harnesses will be different as well as the Engine Computers.
There will be mechanical changes too. The locations of exhaust manifold bolts, pipe outlets radiator hose locations and diameters, the location of the AC compressor and power steering pump can be different requiring different hoses. The shape of the camshaft lobes changes often to fine tune specific characteristics of engine performance under various conditions. Using the wrong camshaft can cause minor irritations like hesitations and sputtering to excessive emissions and failure to pass emissions tests.
You have to know what the differences are to figure out if you can work around them. I use the Rock Auto web site a lot for reference. You can look up a part for the '02 model and the '05 model. If they show the same part number, you'll know they're the same for both years. If the part numbers are different, you'll know they're different, but you won't know why unless you can tell from the pictures.
Wednesday, February 11th, 2015 AT 12:06 AM