Hey hey, chill out, Ron gave you good information, plus, i bet that you dont know that if you tried to run N2O on the stock pistons might as well throw pebbles in them...do a search most questions have already been answered, and dont get tight like that, is these guys opinion

 

technically no one answered his question.. But im with most of the other guys.. Dont spray! Just crank the boost up on your turbo... If your motor can handle it.. I dunno about running a 20g turbo on the 420a motor.. Just doesnt seem very practical to me.

 

No need to bash on people who are trying to help you. We don't recommend it, but do what you want.

So OK, here's your answer.

Assuming it's a single nozzle system, put it in the UICP 6-12 inches before the throttle body.

Hope it's a wet system and you jet it correctly.