Any Felt dealer should be able to order you one (if they will or not is another story) The only difference between the thick and the quick is the size.. the thick bricks are 3" wide and I think the quick bricks are 2.125....
I'm going to do this the way I do when I teach in law school:
Below are two bikes. Which one has blackwall tires and which one has whitewall tires?
Seriously, I understand the confusion because whitewall tires have a white strip, but so-called "blackwall" tires are all black- no stripe of any kind. Adding to the goofiness is all-white tires (not called "whitewalls") all red tires and gum wall tires.