[Electric]

Here's what I would do:

1. Headers - not even because of power, just knowing how inefficient stock exhaust manifold is makes me want "proper" headers.

2. Dyno tune.

3. Polyurethane bushings. (Do they make them for Camaro?) I feel 1LE can benefit from minimizing suspension flex.

4. Stiffer rear sway bar. - 1LE does have an amazingly good turn-in, and minimal unsersteer, but ideally I would like to tune it out completely.

5. Brake air ducts (+ pads) - stock brake are pretty good, but the ducts are relatively inexpensive and can be of a lot of help when decelerating from 150mph.

6. 19' rims - reducing unstrung rotational mass, plus better ride on bumpy roads. (But good rims get pricey.)

Personally, I wouldn't mess with different springs or shocks. Given that it comes from the factory with very well selected spring/shock combo, its just too easy to make things worse by installing aftermarket springs.