If i'm not mistaken......the army was pulling out those mats......because they were hold moisture and rusting out floors......
Mine has none.....and i dont plan on adding any...... .
This is true from what I've seen. Though I have had CUCV's that did and some that did not have anything other than metal floor.
I do understand that if you just hose out a rubber floor with jute underneath it, chances are high that it was the jute, not the rubber that would trap the moisture. Plus if you used some form of Rhino liner material on the inside before laying the MIP rubber flooring down (with or without other sound deadening materials), rust would be kept to a minimum.
Of course, one would hope that if someone is here on this site asking questions, they are interested in preserving their vehicle. It is a very personal choice as to how to approach this issue and some take affront at any suggestion other than restore. I must confess I sometimes fall into that camp.
But hey, it's your ride. Do what you want. MIP will work great.
A trick is to NOT buy one and try and put it in during the winter months. Wait until early or mid summer. When you get the floor, roll it out some place where it will get sun all day and the creases that occur during shipping will slowly go away. And it's easier to work with when it's warm. If you can leave it out for a day or two and then put it in, the experience will be much more pleasant than trying to force a cold stiff piece of rubber into place...