I avoid that rubber mat like the plague..
That's what they had originally and that's what rusted out the floorboards from the inside.. Condensation builds up under them, if there's ever a bad door seal or any kind of leak the water gets trapped under there and can't get out...
Alright thanks. Rubber mat is out then. No carpet for me. Maybe rhino line or linex, or some sort of truck bed liner. Not sure if I should do carpet…