Guys --- This has been an extremely informative thread. Thank you all for all the great input. You gave me enough info to do the research, and I am no longer intimidated by, or mystified by, nitrous oxide. It actualy seems very simple.
However, considering where I am with my truck, and my limited budget, I think I am going to spend my money on suspension, and gearing. I want to swap my 4.11s for a set of 3.42s and install a PowerTrax differential locker. Between that and (very low whisper)some IRS problems, the nitrous will have to wait for next year.
Boo