The coilovers adjust the height without effecting the springs - basically the shaft is lengthened/shortened while keeping the springs at the same length/compression. The OEM replacements they offer are different to the coilovers - non adjustable Do you mean you want coilovers in the front and OEM replacements in the rear instead of coilovers all round? (front would be height adjustable, rear wouldn't) I'm not sure if they offer shorter springs/adjustable dampers in the OEM range