It’s always nice to have a spare Model A timing pin on hand. Ordered a spare, put it in the tool box. Sometime later, I lost the timing pin on one of the A’s so I dug out the spare. It wouldn’t fit. Sure enough……it was metric. So I made it SAE.
Next time I was placing and order for Model A parts, I mentioned the problem. They were kind enough to comp me a timing pin. Which also turned out to be metric.
But nothing was as much fun to work on as a 1952 MG……with not only SAE and metric on the same vehicle……it also had Whitworth parts as well.