Think it was something like that
Of my mods to date, I would rate in order of usefulness:
1: Headers
2: Torque Converter
3: Tuner
4: Cat-back
5: Ported TB
6: Airbox Mod
If I wasn't waiting for the Whipple kit to come out, 4.56 gears would be next on my list. From the other feedback I'd read it will likely be one of the best mods you could make. Even with 4.10's the truck could definitely use better gearing. Obviously the Whipple kit will surpass all other mods by far if you don't mind the 8k+ price. But their last response to my inquiry was, "Hello sir we are still waiting on casting and a few other things to engineer."
The torque converter along with Hemifever's trans tuning did wonders for drivability, so highly recommended. Along with a gear swap it would probably the best way to start. The headers did drop my 0-60 about a second, which is why they are high on my list. One good look at the factory log manifolds and you can easily understand why they help so much.