I have the Sure mounts and replaced mine about 2 months ago (yes, Sure sucks, I bought mine from a local who had them but never installed them). I did front and rear without dropping the subframe with the diff resting on a floor jack.
For the front mount my bushings were pretty tired so if anyone is thinking about keeping the OEM front mount they should at least check/replace the bushings. The front mount is a relatively easy install IMO.
In hindsight, I wish I had given some more consideration to dropping the subframe for the rear mount. The rear Sure mount seems like a stout unit but it is a pita to try and fit in without dropping the subframe. The CPE and CS mounts have reliefs cut in the front of the mount which give a little clearance for the sway bar (their shape is closer to the shape of the OEM mount), the SURE mount does not which makes the install much more difficult. I would not recommend anyone install the rear Sure mount the way I did, either be prepared to drop the subframe or buy a CS or CPE rear mount.