The 99-04 are essentially the same. The major difference is the manual transmission change during the 01 model year run. Now, there are some other minor differences along the way, trim pieces, interior pieces, scoops, badges, spoilers, etc, etc, etc...but they are more or less the same. The 99-04 is known as the 2nd Generation of the SN-95, whereas the 94-98 was Gen 1.