If I had to buy a crank I wouldn't stick with the small journal sizes, the bearing options become far more limited with the smaller sizes.
FWIW the bearing damaged was NOT caused by debris from the valve spring incident. Something else caused this, the broken valve spring likely saved you from turning the whole thing into a boat anchor. I'm going to do some checking today at the shop, I may have a solution for you. Text me before you buy anything.
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