Quote Originally Posted by whatever210
no its to much where the whole suspensions system will have to be pushed up. theres a reason they make longer springs in the rear of the s14....smother ride. thats why the s13 rear is better for drifting. some people change to s13 rear subfram
I posted photos comparing the S13 and S14 springs. How much in numbers is it different? There's virtually none in the photos. Eibach even sells helper springs that assist in situations like this. A coil-over sleeve would allow adjustibility though.

If it's a 4" plus difference then sure I can see there being an issue. I understand the S13 lowering spring may be a lower spring rate but it's still should be far stiffer than a stock spring. It makes no sense that you can't use any other spring as long as it securely fits on the perch.