To install the front, you do not have to remove anything but the old L bumper, impact shocks, wheels/tires and the wheel well shields for inner fender access.
For the back, you need to remove the L bumper, impact shocks and you're ready to install the new split rears---that's it.
The front bumpers bolt into the original 3 holes on each side and the rears have a mechanical fastening system attaching to through the impact shock holes---no drilling is needed to install the new design.
Hope this helps.
Kirk
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