I see you didn't get an answer. I added bungs when I installed mine. It been a long time ago. When temps get a little warmer I am tearing into mine to do the rear end gear, I will be going over all that again. Getting more familiar with the zeitronix again. Haven't used in it a couple of yrs. I'll share all that with you then. I never did figure out how to set the parameters for the fuel pressure gauge. So I have to brush up too.