Unison Ring for Ford 03-07 Powerstroke 6.0 GMC CHEVRY Duramax 6.6 GT3782VA GT3788VA Turbo Charger Direct Bolt On for 03-07 Garrett GT3782VA GT3788VA Turbocharger Fit on Vehicle: 03-07 Ford Powerstrok 6.0L & GMC/CHEVRY Duramax 6.6L