[AndrewL]

Updating this thread in case it helps somebody in future.

I bought 4321248 from RockAuto and found I had to modify the clutch in three ways to make it work on my car (hopefully I remember the detail correctly, I did this six months ago and am relying on my photos to prompt my memory):
1. There was a locating lug on the ac compressor which wasn't required and fouled the compressor, so I had to remove it.
2. A locating hole was in the wrong position on the clutch. I rectified this by drilling a locating hole in the required position.
3. The electrical connector was of a different style, so I had to remove the old female connector from my broken clutch and wire it onto the new clutch.

These changes didn't sit well with my OCD, but in lieu of being able to find a plug and play clutch its what I had to do to fix the clutch so I could drive my car.