I too sent this style back as it was too difficult to install. Went with this type which intalls onto a single bolt that is easy to get to. Couldn’t be happier.
I have a Rubicon with 35’s and no lift. I also installed the AAL fender bracket and removed the inner fender liner. This gives me several inches for the front tires. I haven’t decided if I will do that for the rear. I go offroading, but not rock crawling so it may not really matter to me.
For the ladder, depending on the platform legs, you may need spacers. I think I have the low profile legs and spacers weren’t needed. You do need to drill two holes at the bottom inside of the hard top into the body tub as you can see in my photos.