So, my 99 got destroyed (it deserved better) and I found a 05 Silverado nonHD with the 5.3L. It has 151000 on it but I'm not that scared because if you know a thing or two about trucks you know what to look for, in my opinion. The price reflects the miles. I am thinking about this order of things: CAI- Airaid TBS(?)-Airaid (some like em some hate em) Tuner- Diablo seems decent, I just can't afford to keep getting it custom tuned after I tinker with things Exhast- true straight or flowmaster better? Headers- not sure on brand, would like to do longs but with milege and money probably shortys Any thoughts are greatly appreciated!!!