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.