After removing the bumper, it doesn't look like I need to really cap the frame unless I'm missing something. The crossmember you see here comes off with 2 14mm bolts, and the front of the frame has that mostly flat piece with remaining bolt holes on the front. For anyone who doesn't know, the Addicted bumper comes with a crossmember that is welded in between the front frame rails.Nice truck. I am a fan of the addicted offroad bumper, be sure to weld caps on the frame rails and not to hit a deer, ha!
Looking forward to seeing your progress.