The main bolt on the top of the mount is 17mm. The 3 other smaller bolts are 13mm. The mount on the Turbo side has 2 13mm bolts on the front of the base of the mount and a third that comes up from the underside of the frame on the rear. I found these, along with the 1 17mm bolt on the top were easiest to get to from the bottom of the car. For the drivers side, 2 bolts I could get to using a very long ratchet extension with a flex joint. The third I got to from the bottom. The top bolt was also accessible from the top of the car.

Overall, make sure you remove all turbo hoses and tubes - this makes things much easier. Basically - remove most simple things that could get in the way.

It was an easy job - just don't get too frustrated when some of the bolts prove awkward to remove. I would say the whole thing took me 2.5 hours working at a steady pace.

88 745T 175k mi
Stephen