Looking for some info on how hard it is to replace the brake booster. 2hr job? 4? 8?

Do I need to undo any of the master cylinder hardlines to make room?

What else to look for?

 

40 min if know what you're doing. To remove the booster you have to remove the master so yes, disconnect the connector, drain master fluid, disconnect two lines from the master to the ABS unit disconnect the lines from at the master not the ABS unit, and plug them, remove master, then you can remove the booster. There's a couple pins on the rod, but everything thereafter is common sense. Just make sure your rod length is set before you install the booster, the rod seal goes with the groove towards the master.