Also, the ball joint is different. At first glance, the S13 and S14 ball joints look the same, and upon closer inspection, they still look the same. Don't be fooled. The S14 ball joint uses a slightly different taper.
Although it will bolt together, using an S13 ball joint on the S14 spindle
can lead to a very dangerous suspension failure. You must switch to an S14 ball joint. Nissan doesn't sell S14 ball joints separately from the lower control arm, and, of course, the S14 control arm is too long. Pressing the ball joint out of your S13 control arm and pressing in an aftermarket ball joint (we used Moog part number K9820) is the best solution.