I have never seen a factory pattern (or specs) for a 47-55 Suburban rear floor.
Do you still have the original rear floor plywood in your suburban?
Do you have the floor plates that go under each seat-floor bolt?
If you have the above items, have you tried to make a pattern?
I made a pattern by placing roofing paper over the floor, placing the floor plates in place, and drawing where the cut-outs and edges would be.
If you do not have any linoleum left, you would not know how the width of the lengthwise grooves. Are those the "contours" you refer to? I'll measure that, if you want (I dimly recall that they were about 3/4" apart but that is a guess).
