I have the standard #4 trunk line, #3 from solenoid to plate, I'm leaning towards using the Cheater plate, as I have used them in the past, and used a 8 jet size jump between fuel and the nitrous, plan to only run a 150 shot. I have never used the ProFlow plate, so the orifice size and their chart wanted 9.5psi flowing on the fuel side made me a little concerned.
I am running the car at Pomona next month, I won't be able to get to a track beforehand, maybe a pass or two at the local street race spot, and see what the wideband says.
I'm also installing a Dana, should be finished this weekend.