if you go to http://www.unorthodoxracing.com/ and basically select an underdrive pulley for the tl, it will say 00-03. this isnt the only case either, i've seen dozens of sellers posting fitments of only 00-03, not 99-03. so is this seller typo or is there really something different that i dont know about?

thanks

 

i've tried searching but not really sure what to search for, im sure someone out there has to know. besides from the obvious 4 and 5 speed difference, is there anything else?