So I have a 2000 miata that I want to replace the headlight assembly (pair) on. Everywhere I look, it seems that 99-00 have their own set and 01-04 have their own set. What is so different about them? Can the 01-04 fit in my 2000? The connecting points look similar in images, however I can't tell for sure without having one in hand to verify. If I'm going to buy new assemblies, I'd rather buy aftermarket than OEM, so if 99-00 is my only option...please recommend a good place to see what styles are available. Thanks for any help.