Here's a nice set of Hi-Lift Jack Mounts from FourTreks. Machined completely from billet aluminum, these also include the billet aluminum wing nut knobs. Holds the jack securely with no rattles. These are 1-7/8" ID for the Toyota Bullbar bumpers, let us know if you need these in a different size. These allow some flexibility in where you clock the jack, and you can mount it so there is no impedance of your headlights. You can lock the jack to the bullbar with a simple cable lock, if desired. We like being able to use our ARB Bullbar for yet another useful task.
We also highly recommend the Daystar polyurethane jack handle isolator as an option below. We can get Hi-Lift jacks (if you can't find one locally) and most of the popular Hi-Lift jack accessories as well- email us if you have a specific need.