PS
By quick math, if the header would bump the Subaru from 27 to 28 mpg @ current price of gas, the payback on purchase would be ~40,000 miles or 3 years.
@ ~80K on the clock now, the payback period would include the timing belt replacement, so spending the ~$150 dollars will be nothing compared to the ~$750 the will need to have the timing belt replaced in the next 3 years.
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