I know right?! Hours of PB blaster soaking, all the torque in the world wouldn’t break the top nut loose. I ended up cutting the shock at the very top to remove it. Just ordered coil overs for the front off ebay (shockmasters) for $180.
Just some info for anyone needing to replace their rear shocks on their Lexus gx470:
The Monroe 37270 OE replacement 4Runner shocks bolt right up and are about $60 for the pair. This is a great alternative to spending the hundreds of dollars for the electric shocks.