Nitrous. Biggest shot for a 318

RustyRatRod said
150 is fine. If you want to make damn SURE it never leans out, run a completely separate fuel system for the nitrous. Pump, lines, filter and all. May seem like overkill, but they when you upgrade the fuel system will already be there.

i agree unless he is running a 1/2" with return and a couple of pumps, then he could come off to another regulator and be ok. still safer your way!