Bob,
    Let's try it this way.
Here is the drawing of the frame and tub.  It's not to scale, so don't take anything that's unmarked literally.  ie. I just noticed I've got the forward most mount lined up with where the tub curves in.  I'm pretty sure they don't line up.
 
The 13 5/8" measurement seemed to be the most consistent.  It actually varied by about 1/4" depending where you measured it.  I didn't realize my rockers were so wavy.  All of the fore and aft measurements were taken from the part of the tub where the floor steps up as shown below.
 
 
 
How far up do the sliders go?  Do they tie in to the front fenders at all?  I think I'd prefer it if they did, but I have two issues on the driver's side.  I still have the through the floor pedals, so I'm going to need a cutout for that.  I marked it on the drawing, but after thinking about it, I can probably cut that out later.  For that matter, I could drill the body mount holes as well.  The other thing is I have a remote mounted oil filter that lives next to the clutch pedal as shown.
 
 
I would like the slider to protect it, but it would be really nice if there was an easily removable hatch that I could take off when I need to get to it.  How tough would that be to do?  I suppose I could also get to it by taking off the fender.  Maybe that would be better.  What do you think?  Here's another view of it.
 
 
The pass side is pretty straight forward. Nothing hangs down there.  Is there anything else you need?  Are there any other pictures you need for your website?  I'd be happy to take any views you need.  I could also bring the Jeep up to Cheyenne when I come up.  Would that make it easier?  I'd like to bend your ear a bit about how to go about replacing the floor.  Also, do you have any pictures of the sliders?  These are like the ones I saw when I visited you right?  I'm curious how they go around the step.  Do you have any pictures of that?
 
Well, that's all for now, if you need anything else, just PM or email me.  Talk to you later.
 
Ollie