On an 07? Save yourself a headache and cut the rear u-bolts instead of trying to undo them. Just make sure you take the weight of the diff off of the leafs with a jack before you cut em.
U wont need spring compressor with torsion bars undone and from diff hanging with no support u will be able to slide springs back in with only a large screwdriver to pry a little. Done 3 of em this way 05,08,12 all done in 1 hr each