Pick n pull would be an easy option or scout ebay for one. You could look on facebook marketplace too, I don't know how good your area is for 4runners but might be worth a shot. Alternatively you could post a want-to-buy thread in the classified section of the forums
When you say you broke it, do you mean the plastic mounts holding it on to the hatch? I don't see how you'd break the metal piece itself, but if that's the case then that must be a good story
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Y2K Highlander
Millennium Silver 3.4L auto @ 320k and climbing
Toytecs + 5100s / 7.5 wrap + OME spacers + Tokicos / JBA UCAs / Anonymous Fab. LBJs / Total Chaos Gussets / EimKeith PCK + LCAR / Extended Bump Stops; Brake Lines; Rear Diff Breather / True North Fab. Hybrid Bumper / CBI Hybrid Bumper + Tire Carrier / 4xInnovations Hybrid Sliders / Opt Offroad Trailing Arms / Lil Skip Gas Skid / BudBuilt Front Skid / ARB Rear Locker