When I did the job on my 300M the lines were flexible so I was able to keep the master cylinder on the car and remove just the booster.
Of course, I had to remove the wipers, cowl, strut tower brace, and some other stuff to just get to the booster
Bleeding a non-ABS system with a mityvac is easy. But if you have an ABS system you'll easily go thru over 2 quarts of fluid. Ask me how I know
