260z 2+2 unsprung spring length

Just recently acquired another set of springs for my 260 2+2 - and was told that they are an aftermarket setup which is highly likely.

However - just to confirm, can anyone tell me what the unsprung spring length is for a standard 260 2+2 setup, so i can measure against the new springs i have.

Is there any other way of telling if they are an after market/performance set?

bueller...  bueller....

Front and rear are about 360mm long.

thanks for that - so the 260 2+2 front and rear springs are the same length?

Yep thats pretty much the measurement I got. Lowered kings I think I measured about 280mm doesn't obviously lower by that much, closer to 50mm.

Are they yellow kings you have?

Have two sets of springs - a blue set at approx 300mm, and a black set 320mm so looks like both are lower than standard. Thanks for your help