To those who suggested ZL1 side rockers, that means he has to do the rears to match. That ain't no "$250 package" deal
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To the OP, what do you mean by "exhaust" in your mod list? Catback? Hi-flo cats?
If engine performance is more of a priority than looks, go with a scoop to compliment the cai. If looks are your thing, get some Oracle or Showstopper side markers..maybe even a used rear spoiler that fits your taste.
You could get lucky at that price point you seek, and find hi-flo cats, if they are in the cards.
When you are done your bolt ons, be sure to tune!