Factors influencing time:
* Your experience: A novice mechanic will likely take longer than a seasoned one.
* Access: The LeSabre's design might make reaching the starter more or less difficult. Some things like rust or tight spaces can add considerable time.
* Tool availability: Having the right tools (sockets, wrenches, possibly a breaker bar) readily available will speed up the process. A jack and jack stands are essential for safety.
* Starter condition: A seized or extremely corroded starter can take extra time to remove.
A reasonable estimate for someone with some mechanical experience and the proper tools would be around 1.5 to 2 hours. If you're unsure of any step, it's always best to take your time and consult a repair manual. Rushing the job could lead to injury or damage.