I have a 2000 z28 I need some help. I removed the EGR sytem.. now theres the EGR solenoid do I remove that? and cap off the line going to the saucer air tube on top? and do I block off the HVAC lines coming from the back of the intake.im installin a dorman 615-901 and theres no nozzle for the HVAC lines. thanks any help will be appreciated