S13 ka24de, harness, ecu going into s14 95 obd1

[LvS13240sx]

Hello guys I need as the post says done if possible.
I have had a s13 92 ka24de and auto transmission swap laying around my garage for about 3 years and found a s14 shell a week ago and want to put the 2 together
I have come to under stand that the main difference is in ka s13 and s14 are the following.
S13 has has butterflies in its manifold to help with cold starts s14 the factory deleted them
S13 has coil outside it's distributer s14 has it bilt in the plug are also not the same
S13 and s14 have different ports on there ecu, pin outs are different so harness must match ecu .
S13 drive shaft may be shorter than s14
Well if I have s13 motor s13 trans s13 ecu I would need s13 harness and it should be fine but would need s14 drive shaft . Equals running car at end of the day . Need confirmation I tried searching but get lots of info about making the s13 motor run with s14 ecu so things need to be changed to run with the ecu . Also the bottom trans harness should conect to engine harness no problem rite there wouldnt be a specific at or mt ?

[PapaSmurf2k3]

I believe the lower harness IS specific to the trans, as it has reverse/neutral sensors, etc. For all I know, the auto sensors could be the same though. Nothing should be different on the front (alternator/starter, etc).

Driveshaft length will also depend on if one of the cars was ABS, or you are switching auto to manual. You might want to just measure to see what length of shaft you need.

[LvS13240sx]

OK I think your right the lower that's on the automatic transmission is there and I can't be used on a manual but regardless all s13 engine harness are the same and hook up to both auto or manual?
And to sum up my other question
S13 ka24de, S13 harness ,s13 ecu a/t ,s13 a/t
Should be fine and work? Will it wire into the brown clips without wiring for gages. Like will stock conect clip to clip .

[PapaSmurf2k3]

I mean, it might just be missing some plugs that you don't necessarily need. Or, they could be common sensors/connectors between the 2. Old Nissan was pretty good at that commonization s***. Not anymore!
This would be a good thread to read:
auto-to-manual-writeup-5-speed-conversion-t181139.html