While Mac's Auto Parts once specialized in Ford parts, which were warehoused in Lockport, New York, USA . . . those days are over.
Employees (rumoured to be about sixty) at the Lockport address have been given notice, the parts inventory "has left the building". The sewing crew and at least one counter staff remain. How long before the lease expires . . . ?
There was a time when you could walk in with your used "take out" part, compare with what was on hand, and acquire one there and then.
Mac's was sold about three years ago, and has undergone changes. It has now expanded into Chev parts, the warehouse is located in the State of Florida, USA. You can now order parts, wait an optimistic 3-5 days for delivery to the old Lockport, NY showroom. Hope your parts were properly picked and packed, pay the NY State sales tax, and you are good to go.
There should be little impact on those who have always done mail order from a global perspective.