I have the stock 86Z springs on my new suspension and I want to lower the front and rear 1". Would it be better to go with a true IROC spring and cut it or an aftermarket setup? I could care less about comfort since this is not a daily driver. I want a stiff spring that will work well with my KYB adjustable shocks and stay within the limits of being a direct replacement, i.e. no coil-vers. Thanks.

 

First, the KYB AGX suck.

I would recommend Hotchkiss springs. Not sure of their drop on 3rd gens though.

 

Well, KYB is what is on the car so lets move on to actually answering the question.