To high of a compression to get decent numbers. he could maybe push 4-6 lbs before something gave out.
Non is a brand, there are many other nitrous kits out there. Nitrous is safe when used correctly. just get quality parts and set it up safely.
Plus think of it this way. You spent almost 4-5 grand between all the parts you bought to get 40whp. Same thing could have been had with a $600 nitrous kit.