The rear bumper vin can be viewed directly in the center of the bumper "without removal of anything"
i found it in the center
then cleaned it with a few wet q-tip and
then it became perfectly visible especially with a little flash light
still at an extreme angle and very hard to photograph but its there and you can see it without doing anything crazy and also to note my bumper is not sagging its really tight and where it should be even on the sides so that shouldn't matter