My 72 240 has sagging springs in the rear that cause it to sit real low in the back; so low that i can't even go out my diveway without scraping the rockers (Ouch!)

I'd like to get a set of replacement springs for the car but modern motorsports has all different types of spring rates, which one do i need?

Edit: actually they only sell coilovers, is there a place that sells regular replacement springs for our z's?

Also, are the 1" eiboch (SP?) springs any good? I imagine even with the drop springs it should raise my car up? It's about 2" lower in relation to the front the way it sits now.

Thanks for any advise guys.

anyone know?

www.shox.com

And search spring rates on this site. There is heaps about it already covered.

I know because I looked into this a few months back.

The stock rear spring rate is 1.80 Kg/mm.