Welcome to less fuel costs, JonEmetro!
Not to discourage you in anyway, but your 1.3L is never going to achieve the numbers that a 1.0L Metro can...I have a '97 LSI 4cyl/automatic like yours was originally, and for it, 37mpg would be considered a pretty good number. However, take into account that it's un-modded and driven normally, so playing the hypermilin' game should show some benefit. Best wishes in your quest!
Hacksaw.
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