Yes I believe mine was in the range, manufacture date 3-2005. I am planning on doing a leak down test and listen for air escaping to see what gives. I have removed both the intake and exhaust camshafts. I'm determined to get this thing running smoothly again. I am only the second owner and the first took good care of it. It now has 140K miles on it.
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2005 4.4i with sport package
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