Regarding the rear A/S bar, I put one on my '89 half ton Suburban several years ago. It took just an hour or two and went easily. I don't recall any drilling, but it sure tamed the rear end of that thing.
I got the heaviest duty one I could find.
Don't lose your head to save a minute, You need your head, your brains are in it. Burma-Shave (1947)
