Welcome!
You'll find a lot of information in the 2nd generation forums. Although, many of the people there are into much higher horsepower than you'll probably need.
On my last truck ('99), I went with the Edge EZ box. Made a lot of difference, and I'd strongly recommend it for you. It is very easy to install (2 plugs and a boost elbow), and quite "safe" for your engine. It increases boost and changes the timing of the injection, whereas many of the bigger boxes do things to the injection pump, causing it (and other components), more stress. The engine is "de-tuned" by the factory for emissions. Changing the timing will cause more smoke, and higher EGT's, but they should be safe with just the EZ box. I say this, but be sure to get an exhaust gas temerature gage, so you can monitor it.
Now that you've paid the money, you can use the search function. I'd start by searching for EZ, in the 2nd gen forums.
Trust me, your engine's got plenty of unleashed power available to tow 8K with total ease! Good luck, and enjoy.