Do many chargers have 383 stroker motors?

No, virtually no mass-produced, commercially available "chargers" (referring to Dodge Chargers) have 383 stroker motors from the factory. A 383 stroker is a modified engine, not a standard production option. While Dodge offered various V8 engine sizes in Chargers over the years, a 383 cubic inch engine would have been a custom build, achieved through aftermarket modifications.