Can you take the top off of a 1973 bronco half cab?

No, you can't take the *top* off a 1973 Ford Bronco half-cab in the same way you can a full convertible or a Jeep Wrangler. The half-cab has a fixed roof over the front seats. It might have removable side windows and a rear window that could be unlatched, but the roof itself is a permanent part of the vehicle's structure.