Greetings Sean,

Kind of a kick to the head isn't it? If I were just guessing I'd almost believe that the condensate drain for the evaporator was plugged and that water building up in there was pushed through the lowest vent and settled in the carpet just below the vent exit. I would also believe that any local body man or experienced fabricator could build you a new floor pan and weld it into place. In my younger years I remember a fellow who use to buy 55 gallon drums just for the metal to shape into floor pans and rocker panel replacements. He was very good with his hands and did a quality job at a great price. Just remember to reseal whatever work gets done and use some rubberized truck bed coating on the underneath to seal out new rust growth after the panel installation.

Charles

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"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan