Here is a link to the instruction I followed. The instructions on grinding down the bumper are on page 7 of the comments I think.
https://www.jeepgladiatorforum.com/forum/threads/swapping-the-mojave-plastic-bumper-with-the-mopar-steel-bumper.32427/
I just recently installed a steel bumper on my Jeep Gladiator Mojave. I reused the existing orange tow hooks. I have a set of Mopar red tow hooks for sale. Please make an offer.
Also any parts from the OEM front plastic Mojave bumper are available including the LED fog lights.