RE: Nitrous?
I think you would want to consider the amount he wants to put through YOUR 6.1
While nitrous is by far the cheapest way to make horse power, our rotating assemblys will limit what you can spray. The converter has a slippage of 8-11% on just 400pf, so imagine the 110-125pf of torque you gain for every 100hp shot.
At the very least limit it to 75 + 75 on a two stage, and at all costs avoid a dry shot with our already limiting throttle bodys.
Best of luck