ok, i just confirmed it, my buddy, when he blew his motor the first time, swapped in a 95 ka. he used his ecu and harness. he just put in his dist. The s14 dist. has the coil inside it, thats what the difference is. so if you want to use your s13 harness and ecu, then you have to use the s13 dist.
good luck with the swap.