Nitrous plumbing A1A...??..

150 shot and under you are fine tapping into the fuel line to your carb (assuming you already have a good electric pump and sufficient supply). Over 150 I would get a dedicated line/pump/and regulator. The nitrous side is self explanatory.

For what its worth, this is what I did years ago with my cheater system. I was tapped into my main fuel line, running a 150 shot. I had one side of my regulator feeding the carb and the other side feeding the N2O system...tried a 180 shot and it was fine as well, but I was at 5800' (i.e. I had more fuel to spare than sea level folks).