If you have a 4x4 head i would buy a Spec-R Rs500 turbo damper adapter, this then allows you to use an RS500 turbo damper.
You'll also need to file a lug off of the head, it is located above Cylinder 1 exhaust port just beloe the cam cover, the turbo will foul this otherwise.
Also when you fit the alternator drop bracket you'll need to cut a lug off of the block, you can't miss it
