Do the fronts first, one side at a time, and everything should stay more or less in place. Do not remove both front mounts at the same time. Do the rear (transmission) last because you have to roll the car back and forth a few times to get everything properly settled before retightening the cross member (see the service manual). The front mounts should take about a half hour or so each. Use a long drift to realign the arm over the mount. Simple job.