Not so fast gp - the carpet is actually easier than under the battery area. It just unsnaps and pull out. Try to find some replacement on ebay. I really don't think an upholstery shop will do it right. In reality, all you really have to do under the battery tray is to remove the battery, remove the pan that holds the battery and then clean everything underneath there real good. After you have cleaned everything up you should be able to identify the rusted area. Make sure everything is good and dry and put some "stop rust" type material on the edges. Try not to get it on the surrounding painted area. After this sets just prime it good and then whatever top coat you want on it. You will save a good bit of money by doing it this way. The neatest thing about these cars is how easy they are to work on. Pull one of the carpets up tomorrow and you will see BUT if there has been any leakage into the car it will show up by more rusted areas underneath the carpet. Again, just fix it like I just described and do whatever you have to do to stop the moisture from coming in.

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Jim