If you are still looking for these I accidentally ordered 4 rears so now I have 2 for sale
Bilstien 5100 PN 33-313146 rear shocks for 4th gen still in box ordered from shockwarehouse couple months ago
Price is $150 + shipping from 80504
Bilstein 33-313146 Rear B8 5100 Lifted Shock Absorber Toyota 4Runner, FJ Cruiser - Shockwarehouse.com