I never would have noticed, the front springs two topmost coils are 1/2" apart and the rest 3/4" apart and the rear only the top coil is progressive.

What are the most common springs that are used to replace these?

Thanks,

Chris

I never would have noticed, the front springs two topmost coils are 1/2" apart and the rest 3/4" apart and the rear only the top coil is progressive.

What are the most common springs that are used to replace these?

Thanks,

Chris

Tokico springs for the 280Z are stiffer and non-progressive. John Coffey has a guide on HybridZ on making them work on a 240Z (cutting).

Just for anyone who is following this thread and looking for the same answers I am,

http://forums.hybridz.org/topic/88025-installing-tokico-280z-hp-springs-in-a-240z/

thanks to John C., LeonV, Jon M., Zed ....