here's mine... http://www.toyota-4runner.org/showthread.php?s=&threadid=28880
There are 6 bolts holding it in. The 2 front bolts, bolts to the bottom of the bumper trim (factory bolt location). From my recollection - The middle 2 bolts, bolts to the Chassis (Factory bolt holes locations on chassis). The rear 2 bolts are attached to slots in the factory plate. It is very sturdy.
Hope it helps.