Hi. Im building a d16y8 turbo setup and have a few questions about your head packages. Does the stage 3 and 4 include a valve job? I will be using all new components in my head including valves so Ill need a VJ for sure. Im looking for 300-350whp, is the port and polish nessasary to reach my goal? Ill be using the bisi 2.4 cam if that matters. Also, how much do you charge to port a new y8 oil pump? Thanks for your time and I look forward to doing business with you in the near future.