Only liability.. though i should be getting the hag's (yes i think i can call her hag, once i tell the story you will agree) $500 deductible.well hopefully you had full coverage? How bad?
Yes, staying LHD, and i am doing exactly what you are saying.for what i'm about to say, i am assuming you are leaving the car LHD
on your RS harness, focus on the part of the wiring that goes from the engine bay -> ECU. isolate that section and determine what all the wires that LEAVE that section are (so, what goes to the rest of the dash, etc). isolate the same section of the JDM harness, and replace that section with the same section on the RS harness. make sense?
basically youre replacing the orange and blue sections (in your picture) with the yellow and pink, merging them where they mix in with the rest of the harness.