| :than the stock z32 systems? I don't believe they do? But I have not measured them to be able to answer that. The Hyabusa coils are pretty much the same damn thing as the AEM pencil coils. However, on a z31 the z32 coils will not fit. I have to use a coil that clamps on to the plug and will fit down in the plug hole. You guys have a place to bolt down your coils so they don't move. The Hyabusa coils were an easy solution and less bulky than twin turbo coils. 
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