nos fuel pump?

a friend of mine has a NOS fuel pump for 5.0 mustangs. he wants $100 bucks for it. But is it really that important to run that pump with nitrous? whats so special about it? and if i decide to go with it is there anything special i need to know about before installing it? what is necessary to do before putting in a fuel pump?
 
run a HP 255 in the tank, about 120-130 shipped, and forget the airtech NOS pump. they are only 160lph, and funny enough, do not flow well at all in high psi situations. I have melted alot of plugs running that pump and going lean, using anywhere from a 150-175 shot (dry).