harmonic balancer
 

so i have a wobbely bobbely crank pulley. It seems that if the title "MIATA" is in my search, the pully is always more expensive then lets say a protege or something. or even an na 1.8L. My question is wether or not I can buy a 1.8 crank pulley from an NA or from a protege or something. They look the same but I have no clue if the bore for the crank is the same.
Tried doing some searching, it's kind of a hard question to ask google! haha

Why not a used one? $50 all day long at Car-Part.com--Used Auto Parts Market

i'm totally game for a used one. just wondering what years use the same pulley's as i am a mechanic and can get alot used stuff at ease. (Just not miatas)