So many needlessly indirect answers... :shrug:
No, you cannot purchase a factory 4runner with heated/leather + rear locker. You can get heated/leather (SR5/Limited) or rear locker (Trail). You can also get a Limited with a Torsen center. If that might interest you, many other threads have discussed the comparison between the Limited's Torsen and the Trail's rear locker.
You can also add components after purchase. A rear locker can be added after. Leather/heated can be added after. Other threads have discussed options for both.