If it were me I think I'd try drying the car out before I'd go to that much work. I know that when I had a leak in the LR wheel well of my '95 diesel, I had gallons of water come in and flood the floor pan in the drivers footwell and rear seat footwell to where my carpets were awash. I had this happen a few times before I found the leak when I got caught in downpours and had to continue. I dried the car out and everything worked OK. Admittedly this was flooding from "below" rather than above, so I do understand your situation is different, but seems to me it would be worth a try...

Rgds,
Chris W.
ex 95 E300D, 467K

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