I vote for "tear it out and replace it."

If you do a good job, and have good taste in color, I don't see how it would affect the market value.

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1982 240D.
My name is Michael, and I am an 18 year old binge-drinkin', cigar-smokin', novel-writin', all around unsavory and unnattractive guy. I tell long-winded stories, and I only shave once a week, although I've had to do it every day since I was 16.