i have been thinking about nitrous on my car since the day i bought it. A guy that i know real well at ford thinks any amount of nitrous is bad for the 4.6 due to the crappy rods. I think a 75 shot wouldnt hurt though. Is he right? He is one of the die hard 5.0 guys that are use to coming stock with forged internals, so any rod that isnt forged looks like crap to him
it ought to be funny. those 5.0 guys get on my nerves sometimes with stuff like that, they think they know more about the 4.6 than they really do 

Then after you get the kit installed properly call the manufacter and get he correct jet numbers/sizes.