I did one at a time on the 110 but it still rotated a bit. A jack under the diff nose and a long tapered drift through the remaining bolt holes pulled it straight .it was a faff though and I've got a pit too, lying on your back would be a pita I should imagine.
A tapered drift would likely pull that straight. On my 110 (same set up really) I knocked the drift in from the opposite side to where the bolt goes in, once it was lined up the drift protruded to far through for me to get the bolt in, I carefully removed the drift but it shifted slightly again. I then used the old bolt, ground down on the end to a bit of a taper which pulled it all straight again but didn't protrude as far so I could tap the new bolt home. I seem to recall I had to use a pair of 18" pipe stillsons to twist the arm slightly too as I knocked the new bolt through.
