Kanters just acts as a middle man and sources the parts after you order and pay for them. When I was working on my 1963 Chrysler, they claimed that they could supply me with brake drums. After waiting a month, they still hadn't called back, even though I had called at least twice a week wondering where the drums were. In the end, they admitted that they couldn't find them. Now, when I need a part, I start by looking in Hemmings for vendors, and eliminate the middle man.
Ed, let me know the application, and I will look for you when I go to the swap meets this week and next week at Carlisle.