The engine is ok to pull up several inches if you remove the 2 long bolts in the bottom of the motor mounts and remove the trans positioning bolts to allow the engine to be lifted I would also make sure to have the fan out and something between the front of the engine and the radiator. Changing the motor mounts themselves is a whole other matter with the engine still in the car as it is such a tight squeeze in there. If you don't need to change them I wouldn't and just cable or chain the engine down. I have broken several motor mounts and finally just cabled mine down .......works better and no more broken mounts.