2011-2014 Ford Powerstroke F250/F350 & 2011-2016 F450-550 - Say goodbye to the problematic and small GT32 Single Sequential Turbocharger (SST) on the early model Ford 6.7L Powerstrokes by replacing it with BD's larger Retrofit GT37 kit. Everything you need is included to drop right in place of the old unit, no extra pieces needed.