Your going to plug up the two outer most holes with plugs. The other two coming out of the center pipe section are going to need (2) 3/8 fittings(take it to the parts store and measure it, it's been a while) and a T-fitting. One goes to the PCV, one to the brake booster( for Vacuum), and the last one to the fuel pressure regulator. Good luck with your project. It sounds alot harder than it really is once you start the setup.