Yes - everything was completely rebuilt. I'm unsure if it is at the exact same location as before, but it's darn close in any event.
Directional pattern is altered only slightly from the original specs.
I live about 20 miles north of the TX site, and I've gotta say WDTW delivers a great signal 24/7 to my neck of the woods. They're stronger than WDFN and 1200 WMUZ (formerly 1200 WCHB) here.