88dx--->sohc ZC swap questions! help me!

hi, i just bought a 1988dx hatch back, 1.5 sohc 5spd, now, i have a 91 jdm sohc ZC motor, and i had a few quick questions, 1. i have a 91 civic SI ecu, and wiring harrnis, that will work perfect with the ZC right? and 2. should i get a 91 SI tranny too, for the zc? are the gear ratios diffent between a dx and a si 5spd? thanx for looking! if u have any other tips on the swap let me know! peaCe
~talonpunk

i found it easier to modify the dx harness. just look up on the mpfi swap to find out how. and i have the same setup 88 dx w/sohc zc and i kind of like the dx tranny especially on the highway. i've taken 3rd gear to 185 kph i think thats around 110 mph or something :) but thats with at 8500 rpm redline. if your gonna be going light to light most of the time i'd go with the si tranny.