O.O that's quite a bit of work. Would I have to do all that if I wanted a manual (if the parts were from a 96-97 corolla), or is yours a special case?
Some what special case. I was going from a 4AFE and 131L Trans. Since I want all the features of the 93 I would have to take the chassis harness as well. The 93 (both the manual and high end version) had auto shut of light when you close the door, cruse control, no DLR. The 96 my currant witch is a Prizm (other words is a Corolla just owned by Geo/Chevy) that had no curse, light stay on all the time if you forget to shut them off, and DLR. It also had passenger airbags but I hat the dash style Geo put in there.
If you want to keep what you have, same engine and just want a manual. Just wiring you need to short the park neutral switch (or wire it to the clutch pedal safety switch), and wire up revers lights witch you can do under the hood and dont have to touch the ECU. You can use the same ECU you will get codes for the shit silinoids then they will leave and never come back. Then you just need to shifter and linkages(witch mean you have to run it under the dash), fly wheel, clutch kit, master cylinder, clutch pedal, then make own steel hydraulic lines (its break line just them then from the downer car but keep the rubber hose that should be attached to the trans).
I just wanted all the electrical to mimic or close to mimic factory but for now it just functional.
Engine harness you can keep there will already match the chassis harness since you are keeping the same engine and that how it was factory.