I have that front spoiler and rear spoiler that came stock on a lot of Camaro's.
My front spoiler I'm currently bracing.

The rear one is the just on there.

Do they do anything to enhance performance in anyway or are they just for looks?

If they are just for looks, are there other products out there that will help aerodynamics when I go to the track?

On a drag race 67 68 69 Camaro, a front spoiler helps, the rear spoiler, not so much.

both have some benifit
read here:
http://www.camaro-untoldsecrets.com/articles/article_fs.htm

I wouldn't mind having a front one a bit closer to the ground.

Do they make different types for Camaro or is there just the one I already have?

Lower the height of the car and the front spoiler will help alot more.
Keeping air from under the car helps.

Lower the height of the car and the front spoiler will help alot more.
Keeping air from under the car helps.

I heard that a smaller diameter tire/wheel will actually hurt your ET. Not sure why that would be but anyway, without dropping tire size in diameter up front, that would leave some sort of spring work to lower it right?

Yes, spring work to lower the car.

Smaller tire/wheel combo has more friction than a larger wheel/tire combo. Try the science project with a wheel barrow. Push the wheelbarrow with its large tire, now put a Radio Flyer wagon wheel on it and find its harder to push.