I've got 030 105 255E, so at least it's the right part.
The G40 and CL pulleys have the TDC markers in a slightly different position, approx 5° apart from what I measured last night - though I was knackered so was being spesh.
I had in my head that my original CL engine had a metal timing marker on it too, but coming to think of it, it was deffo plastic. New cambelt cover time methinks.