What Dave said.
Unbolt motor mounts.
Jack engine up (either with a hoist, or a jack under the bell housing...you might end up needing new tranny mounts though)
Stuff some 2x4 blocks in there.
When I recently had the upper pan off, I needed to get the passenger's side mount up 2" and the driver's side about 3". That allowed me to move it straight in & out.