Hello everyone, Thanks for letting me into the forum. I have a 2014 S197, Mustang GT that has been upgraded with complete Roush Stage 3 performance package. I have a Prosport boost/vacuum. I am trying to install theboost/vacuum guage. After days of Internet research I still cannot figure out where the T fitting connects under the hood for the tubing. The place most people say to connect it already has some type of wiring installed. I cannot for the life of me find the vacuum source to connect to. Help please. I will upload a understood photo if necessary. Thanks so much.