Tim, you go from the underside...they're for the front motor mount. I did mine in about 30min too...I struggled with that through bolt as well. It's an easy install. You'll have to jack up the engine (not on the oil pan), take the bolts off the mount, jack up the engine a smidge more, remove the mount, put the ES inserts in, replace.

Make sure you remember which way the motor mount faced, cause it's easy to put it in backwards. drop me a line if you get stuck.