First you will need to purchase a new downpipe for the external gate, pick a wastegate. You will also need a boost controller, there are manual and electronic styles to chose from. The wastegate will come with several springs in it rated at different pressures. I chose a 6lb spring for mine as I want the gate to open as soon as it sees the pre set pressure from the boost controller. Depending on your turbo and how much boost you run you may need to open up the wastegate hole to control boost creep and spikes. Your turbo shield will need to be cut as it will not fit as is. Do some research on the different downpipes available, I have Cottons 3" and it fits great with AC, some will not fit so nice and WILL melt your inner fenderwell, been there already.
Bryan
