They don't bolt in, you just lift them up they slot down in the gap between the bolts. I have the same style on my lift.
didn't notce that at first, but cool. i started pondering that a few years ago after watching a tv show on electric drag cars.
where do you buy your gaskets? I can't put a car over another on my lift unless I cover the bottom car with sheets of cardbooard to catch the drips.