Can be taken out inside or out. I cant remember whats involved taking it outside but think the mc has to be disconnected so need to re bled. I recenetly did it inside, I undo the mc from the servo which is 4 13mm nuts, then take off the throttle pedal and disconnect out of the way, the pedal box is 5 (I think) 10mm, then you can pull the whole thing out and out of the car, disconnecting the clutch cable with pliars.
Best to have some 13mm ratchet spanners and different extensions for easier access. I use my gun on the pedal box nuts with extensions, takes no time at all. Can get access to the mc by taking the arch liner out, I just used the extensions for that one but either way. Did I mention ratchet spanners? ?