Suburban floor pics request..

[RustySunShine]

Hey fellow Chevy fans I have a request.. could someone point me in the direction of what the 'Burban floor pan (first 2 rows) looks like Just the area where the seats are.
I have a 70 Panel I i was thinking it might be cool to put in a second row of seats in since I have 3 extra bench seats. I found few shots from the LH side of the truck but none of the passenger side in of the 'Burban. Also how do they mount and what cross braces would be needed? It looks like the floor drops down back to the rear wheel tubs, then steps up to the cargo area.