Just the other day, I was telling the girlfriend about people taking the 3.8L Supercharged out of my Regal GS and putting it in the 1996-98 Grand Ams. But in a SUNFIRE?! If you were a speed racer kind of guy, you'd be on to something pretty fun there.
I know yours isn't the Supercharged variety, but you could consider it later. I routinely got 33-35MPG in my Regal with five adults in the car. Minus their 800 pounds, and all the luxuries (power leather, dual climate, etc) I'd imagine a Sunfire would achieve great MPG with the 3800.
Looking forward to pic and video updates!
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