If it came from Florida then it should be an ecotec. Very reliable, one recall on the 09s, and doesn't have the problems the old e tec had.
Parts are about on par with most vehicles, not cheap but not too expensive either.
What options do you have? If its an auto, then it is 1lt or 2lt. Although you said it had original factory rims...14" steelies or 15" alloys? Do you have sunroof/foglights? A/c? Cruise control?
I don't think you will find a splash guard for an aveo anywhere, you will have to make one
Also, I think some websites offer a vin lookup that will tell you trim level