Ok, I don't want silly answers here, I want to do it just because I got nothing better to do!!!

Here's the question, has anyone converted an XR3i wiring loom to accept an RS Turbo engine. I got a mint engine, gearbox, ECU's, Turbo, ETC and I want to stuff it in my 3i the only concern I have is the wiring, how do I do it? Do I cut and join or completely replace? or do I simply add the missing wires in? I would like to know how YOU did it please. Yes I do have a S2 Wiring loom to use.

No silly answers please.