For grins, tonight I thought I's see how much the BB fuel tank skid deflects by positioning my floor jack under the rear bolts in question and then lifting the truck off the ground with the jack. The bolt by the RLCA doesn't budge. I can get my finger between the bolt and the fuel tank when the truck is on the ground and with the rear passenger tire off the ground and the weight on the jack directly under the bolt, I can still get my finger in between the bolt and the tank.
The other side, by the drive shaft start much closer to the tank and the skid plate does deflect at that location to the point where the bolt comes in contact with the tank but just barely. When set back down the plate springs back to the original position.
Like I said, this was just for grins. I didn't think the 3/16" SS skid would deflect that much on a controlled lift from a jack but my test shows that at it would be possible to land on a rock in a way that could put the bolt into the tank. I think the probability is low and I do not think it would puncture the tank but there is no reason not to flip the bolt around to eliminate the potential of that happening. I will flip mine round.
@wiseinvestor, thanks for posting the question and checking with BB.