Made the trip to see Gordo yesterday and he accepted liquid currency for the pulley. Cheers Gordo. This is what happened to the other one, there are cracks all over it that the camera didn't pick up.
When I had my overheating issue some of my online research pointed to try over spinning the fan with either a 356 pulley or using extra spacers and running a shorter belt lower down in the pulley. It didn't seem to like it, but now my cooling is under control I can go back to the stock set up.

Gordo wanted me to paint the new pulley before I put it in, as he's a bit of a buffer. So I did.

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