I put 9/16"x4" grade 8 bolts through my leaf eyes, and I also used 1/2" grade 8 for the brackets. It's a LOT easier with the bed off, takes ten minutes to grind the rivets off and get the new brackets on there. I would also grease the leaf spring bolts in an attempt to make them easier to remove should you need to again.
Also, you don't have to take the tail-lights off when removing the bed. There is an electrical connector behind the bumper, a little on the driver's side, that you can disconnect by hand, which is sufficient to remove the bed.
Also, you don't have to take the tail-lights off when removing the bed. There is an electrical connector behind the bumper, a little on the driver's side, that you can disconnect by hand, which is sufficient to remove the bed.