The first significant redesign for the Miata, the NB brought about new bodywork that included exposed headlights. There were quite a few improvements throughout the car, although the basic components were usually interchangeable with the original NA models. 2001 brought a facelift with sharper creases and some extra stiffening. The 2005 model was basically an evolution of the same car that was introduced in 1989, a remarkable lifespan. NB models give a pretty good bang for the buck.