Nitrous plumbing A1A...??..

I think its 12" of rubber hose under the hood?
Also i dont think the fuel pressure regulator is allowed to be on the fire wall?

Mine hangs on a home made bracket between the carbs.

Next time i redo the wire in my car i want to put all the components on a board then wire it and jist mount the board in the car.

It looks super clean (bad *** race car style) , is easy to work on in the car and can be built on the bench.