I might be able to help with this a bit. Near the top of the search results, there is a place to set retail pickup location. This will set an estimated ship date to that location. When you go to do checkout, it will show you which site the parts are coming from. We can't show you the allocation during the parts selection phase *yet*, but we're always improving site functionality to help in situations like yours. Please let me know if this is at all helpful. I attached a few pics.
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