I have seen it...it is not surprising that he is not sending you the trouble areas. I found the asking price TOO high for its current condition and Paul made it very clear early on that he was not willing to negotiate, so I did not even make an offer. (My budget is low 20Kish...WELL ABOVE the asking price).
If I may suggest...
Ask for transparency and to please "include" the rust/"treated" areas in the pics he sends you so that you will know what you are purchasing and thus be able to determine if you are comfortable with the areas.
Short rust list: These areas had typical surface rust but also had rust through - both rear quarter panels, entire rear sill, both rear corner panels(the vertical pieces at the end of the quarter panels...they sit on the rear sill), both sides of rear wheel wells upper and lower panels, rear bed, left front fender, driver floor pan, outside/inside rocker panels on driver side, right side ambulance door drilled holes...and that's just the body metal. Lots of other areas with surface rust but not as alarming.
I'd be happy to pin point you to other areas...mechanical, interior, seals, small accessories etc....it is worth noting that my concerns are only mine and based on what I am specifically looking for and how I intend on using it.
As for me:
I am new to MUD...but not new to reading IH8MUD forums. Although I have only had one FJ40, I did restore it; so I feel comfortable with what I am looking at and the associated costs. I recently sold it....HOWEVER, I did not realize how much my family and I would miss it. My wife and I used it as a date night vehicle and the kids and I used it for BIG smiles at elementary school drop off and pick up. Lots of wonderful memories...hopefully created again with another 40!