[Z U L8R]

you need to use your sohc lower harness, there's no difference in the transmissions externally. s14 trannies just have a little better oiling inside them. neither one is a make or brake it, they both will do the job just fine. you need to use your sohc speed sensor, or just use the plug. it's only 2 wires for the speed sensor

you may want to get s13 dohc power steering lines, or you'll just have to bend urs a little.

rewire your dash plug, all the important wire colors match up. use your sohc dash plug. get a s13 dohc guage cluster and your tach will read.

good luck
Dave =]