I was actually just searching for them as you posted this. I need a set for the 93 --we can't get into the dang thing.
Installing the sliders will only help slightly, and to make things worse I made them "boatsided" so they will actually be another inch or so higher.
They are very expensive though. I think they could be made for a lot less $$$
I see plenty of room to tuck them in so clearance wouldn't be much an issue.
We need to get into the thing before I worry about clearance though, so, form must follow function on this one.