MiniSpares does that too, but they do seem to wait a few days before letting you know on a low stock item whether they actually have it. I ran into that just last week when I tried to order the rocker arm spacer kit - the web page said low stock but it was three days after placing the order before I got an email telling me they were out of stock and asking if I wanted the rest of the order, which I just cancelled.
I've always had excellent customer service from Mike and MiniSport so it's good to hear they have a competitive shipping deal in place.
Mike, if I order on Sunday, I usually have my MiniSpares order on my porch Wed, Thursday at the latest. Will your Fed Ex deal work like this too?